replace q method calls with bluebird ones

```
find src test -name '*.js' |
    xargs perl -i -pe 's/q\.(all|defer|reject|delay|try|isFulfilled)\(/Promise.$1(/'
```

src/ContentMessages.js

@@ -52,7 +52,7 @@ const MAX_HEIGHT = 600;
  *  and a thumbnail key.
  */
 function createThumbnail(element, inputWidth, inputHeight, mimeType) {
-    const deferred = q.defer();
+    const deferred = Promise.defer();
 
     var targetWidth = inputWidth;
     var targetHeight = inputHeight;
@@ -95,7 +95,7 @@ function createThumbnail(element, inputWidth, inputHeight, mimeType) {
  * @return {Promise} A promise that resolves with the html image element.
  */
 function loadImageElement(imageFile) {
-    const deferred = q.defer();
+    const deferred = Promise.defer();
 
     // Load the file into an html element
     const img = document.createElement("img");
@@ -154,7 +154,7 @@ function infoForImageFile(matrixClient, roomId, imageFile) {
  * @return {Promise} A promise that resolves with the video image element.
  */
 function loadVideoElement(videoFile) {
-    const deferred = q.defer();
+    const deferred = Promise.defer();
 
     // Load the file into an html element
     const video = document.createElement("video");
@@ -210,7 +210,7 @@ function infoForVideoFile(matrixClient, roomId, videoFile) {
  *   is read.
  */
 function readFileAsArrayBuffer(file) {
-    const deferred = q.defer();
+    const deferred = Promise.defer();
     const reader = new FileReader();
     reader.onload = function(e) {
         deferred.resolve(e.target.result);
@@ -288,7 +288,7 @@ class ContentMessages {
             content.info.mimetype = file.type;
         }
 
-        const def = q.defer();
+        const def = Promise.defer();
         if (file.type.indexOf('image/') == 0) {
             content.msgtype = 'm.image';
             infoForImageFile(matrixClient, roomId, file).then(imageInfo=>{

src/Lifecycle.js

@@ -236,7 +236,7 @@ function _restoreFromLocalStorage() {
 function _handleRestoreFailure(e) {
     console.log("Unable to restore session", e);
 
-    const def = q.defer();
+    const def = Promise.defer();
     const SessionRestoreErrorDialog =
           sdk.getComponent('views.dialogs.SessionRestoreErrorDialog');
 

src/RoomNotifs.js

@@ -87,7 +87,7 @@ function setRoomNotifsStateMuted(roomId) {
         ],
     }));
 
-    return q.all(promises);
+    return Promise.all(promises);
 }
 
 function setRoomNotifsStateUnmuted(roomId, newState) {
@@ -126,7 +126,7 @@ function setRoomNotifsStateUnmuted(roomId, newState) {
         promises.push(cli.setPushRuleEnabled('global', 'room', roomId, true));
     }
 
-    return q.all(promises);
+    return Promise.all(promises);
 }
 
 function findOverrideMuteRule(roomId) {

src/ScalarAuthClient.js

@@ -53,7 +53,7 @@ class ScalarAuthClient {
     }
 
     exchangeForScalarToken(openid_token_object) {
-        var defer = q.defer();
+        var defer = Promise.defer();
 
         var scalar_rest_url = SdkConfig.get().integrations_rest_url;
         request({

src/components/structures/MatrixChat.js

@@ -224,7 +224,7 @@ module.exports = React.createClass({
 
         // Used by _viewRoom before getting state from sync
         this.firstSyncComplete = false;
-        this.firstSyncPromise = q.defer();
+        this.firstSyncPromise = Promise.defer();
 
         if (this.props.config.sync_timeline_limit) {
             MatrixClientPeg.opts.initialSyncLimit = this.props.config.sync_timeline_limit;
@@ -1039,7 +1039,7 @@ module.exports = React.createClass({
         // since we're about to start the client and therefore about
         // to do the first sync
         this.firstSyncComplete = false;
-        this.firstSyncPromise = q.defer();
+        this.firstSyncPromise = Promise.defer();
         const cli = MatrixClientPeg.get();
 
         // Allow the JS SDK to reap timeline events. This reduces the amount of

src/components/structures/UserSettings.js

@@ -316,7 +316,7 @@ module.exports = React.createClass({
 
     _refreshFromServer: function() {
         const self = this;
-        q.all([
+        Promise.all([
             UserSettingsStore.loadProfileInfo(), UserSettingsStore.loadThreePids(),
         ]).done(function(resps) {
             self.setState({

src/components/views/dialogs/ChatInviteDialog.js

@@ -498,7 +498,7 @@ module.exports = React.createClass({
         }
 
         // wait a bit to let the user finish typing
-        return q.delay(500).then(() => {
+        return Promise.delay(500).then(() => {
             if (cancelled) return null;
             return MatrixClientPeg.get().lookupThreePid(medium, address);
         }).then((res) => {

src/components/views/room_settings/AliasSettings.js

@@ -104,7 +104,7 @@ module.exports = React.createClass({
         }
         if (oldCanonicalAlias !== this.state.canonicalAlias) {
             console.log("AliasSettings: Updating canonical alias");
-            promises = [q.all(promises).then(
+            promises = [Promise.all(promises).then(
                 MatrixClientPeg.get().sendStateEvent(
                     this.props.roomId, "m.room.canonical_alias", {
                         alias: this.state.canonicalAlias

src/components/views/rooms/Autocomplete.js

@@ -73,7 +73,7 @@ export default class Autocomplete extends React.Component {
             autocompleteDelay = 0;
         }
 
-        const deferred = Q.defer();
+        const deferred = Promise.defer();
         this.debounceCompletionsRequest = setTimeout(() => {
             this.processQuery(query, selection).then(() => {
                 deferred.resolve();
@@ -176,7 +176,7 @@ export default class Autocomplete extends React.Component {
     }
 
     forceComplete() {
-        const done = Q.defer();
+        const done = Promise.defer();
         this.setState({
             forceComplete: true,
             hide: false,

src/components/views/rooms/RoomSettings.js

@@ -184,7 +184,7 @@ module.exports = React.createClass({
     },
 
     save: function() {
-        var stateWasSetDefer = q.defer();
+        var stateWasSetDefer = Promise.defer();
         // the caller may have JUST called setState on stuff, so we need to re-render before saving
         // else we won't use the latest values of things.
         // We can be a bit cheeky here and set a loading flag, and listen for the callback on that
@@ -282,7 +282,7 @@ module.exports = React.createClass({
         // color scheme
         var p;
         p = this.saveColor();
-        if (!q.isFulfilled(p)) {
+        if (!Promise.isFulfilled(p)) {
             promises.push(p);
         }
 
@@ -294,7 +294,7 @@ module.exports = React.createClass({
 
         // encryption
         p = this.saveEnableEncryption();
-        if (!q.isFulfilled(p)) {
+        if (!Promise.isFulfilled(p)) {
             promises.push(p);
         }
 

src/components/views/settings/ChangePassword.js

@@ -161,7 +161,7 @@ module.exports = React.createClass({
     },
 
     _optionallySetEmail: function() {
-        const deferred = q.defer();
+        const deferred = Promise.defer();
         // Ask for an email otherwise the user has no way to reset their password
         const SetEmailDialog = sdk.getComponent("dialogs.SetEmailDialog");
         Modal.createDialog(SetEmailDialog, {

src/languageHandler.js

@@ -231,7 +231,7 @@ export function getCurrentLanguage() {
 }
 
 function getLangsJson() {
-    const deferred = q.defer();
+    const deferred = Promise.defer();
 
     request(
         { method: "GET", url: i18nFolder + 'languages.json' },
@@ -247,7 +247,7 @@ function getLangsJson() {
 }
 
 function getLanguage(langPath) {
-    const deferred = q.defer();
+    const deferred = Promise.defer();
 
     let response_return = {};
     request(

src/utils/DecryptFile.js

@@ -28,7 +28,7 @@ import Promise from 'bluebird';
  * @return {Promise} A promise that resolves with the data:// URI.
  */
 export function readBlobAsDataUri(file) {
-    var deferred = q.defer();
+    var deferred = Promise.defer();
     var reader = new FileReader();
     reader.onload = function(e) {
         deferred.resolve(e.target.result);

src/utils/MultiInviter.js

@@ -55,7 +55,7 @@ export default class MultiInviter {
                 this.errorTexts[addr] = 'Unrecognised address';
             }
         }
-        this.deferred = q.defer();
+        this.deferred = Promise.defer();
         this._inviteMore(0);
 
         return this.deferred.promise;

test/components/structures/ScrollPanel-test.js

@@ -74,7 +74,7 @@ var Tester = React.createClass({
     /* returns a promise which will resolve when the fill happens */
     awaitFill: function(dir) {
         console.log("ScrollPanel Tester: awaiting " + dir + " fill");
-        var defer = q.defer();
+        var defer = Promise.defer();
         this._fillDefers[dir] = defer;
         return defer.promise;
     },
@@ -94,7 +94,7 @@ var Tester = React.createClass({
     /* returns a promise which will resolve when a scroll event happens */
     awaitScroll: function() {
         console.log("Awaiting scroll");
-        this._scrollDefer = q.defer();
+        this._scrollDefer = Promise.defer();
         return this._scrollDefer.promise;
     },
 

test/components/structures/TimelinePanel-test.js

@@ -147,18 +147,18 @@ describe('TimelinePanel', function() {
             if(!panel.state.forwardPaginating)
                 return Promise.resolve();
             else
-                return q.delay(0).then(awaitPaginationCompletion);
+                return Promise.delay(0).then(awaitPaginationCompletion);
         };
 
         // helper function which will return a promise which resolves when
         // the TimelinePanel fires a scroll event
         var awaitScroll = function() {
-            scrollDefer = q.defer();
+            scrollDefer = Promise.defer();
             return scrollDefer.promise;
         };
 
         // let the first round of pagination finish off
-        q.delay(5).then(() => {
+        Promise.delay(5).then(() => {
             expect(panel.state.canBackPaginate).toBe(false);
             expect(scryEventTiles(panel).length).toEqual(N_EVENTS);
 
@@ -279,7 +279,7 @@ describe('TimelinePanel', function() {
         // helper function which will return a promise which resolves when
         // the TimelinePanel fires a scroll event
         var awaitScroll = function() {
-            scrollDefer = q.defer();
+            scrollDefer = Promise.defer();
 
             return scrollDefer.promise.then(() => {
                 console.log("got scroll event; scrollTop now " +

test/components/views/dialogs/InteractiveAuthDialog-test.js

@@ -110,7 +110,7 @@ describe('InteractiveAuthDialog', function () {
             );
 
             // let the request complete
-            return q.delay(1);
+            return Promise.delay(1);
         }).then(() => {
             expect(onFinished.callCount).toEqual(1);
             expect(onFinished.calledWithExactly(true, {a:1})).toBe(true);

test/components/views/rooms/MessageComposerInput-test.js

@@ -47,7 +47,7 @@ describe('MessageComposerInput', () => {
         // warnings
         // (please can we make the components not setState() after
         // they are unmounted?)
-        Q.delay(10).done(() => {
+        Promise.delay(10).done(() => {
             if (parentDiv) {
                 ReactDOM.unmountComponentAtNode(parentDiv);
                 parentDiv.remove();