DevTools: adopt FilmStripModel to new screenshot recorder trace format

Source/devtools/front_end/components_lazy/FilmStripView.js

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @constructor
  * @extends {WebInspector.HBox}
  */
 WebInspector.FilmStripView = function()
 {
@@ skipping 43 matching lines @@
         this.update();
     },
 
     update: function()
     {
         if (!this._model)
             return;
         var frames = this._model.frames();
         if (!frames.length)
             return;
+        /** @type {!Map<!WebInspector.FilmStripModel.Frame, string>} */
+        var imageDataForFrame = new Map();
+
+        var promises = [];
+        for (var frame of frames)
+            promises.push(frame.imageDataPromise().then(setImageData.bind(null, frame)));
+
+        Promise.all(promises).then(this._updateWhenImagesLoaded.bind(this, imageDataForFrame));
+        /**
+         * @param {!WebInspector.FilmStripModel.Frame} frame
+         * @param {?string} data
+         */
+        function setImageData(frame, data)
+        {
+            if (data)
+                imageDataForFrame.set(frame, data);
+        }
+    },
+
+    /**
+     * @param {!Map<!WebInspector.FilmStripModel.Frame, string>} imageDataForFrame
+     */
+    _updateWhenImagesLoaded: function(imageDataForFrame)
+    {
         this.contentElement.removeChildren();
         this._label.remove();
         var zeroTime = this._zeroTime;
+        var frames = this._model.frames();
 
         /**
          * @param {!WebInspector.FilmStripModel.Frame} frame
          * @param {boolean=} skipTimeLabel
          * @return {!Element}
          * @this {WebInspector.FilmStripView}
          */
         function createElementForFrame(frame, skipTimeLabel)
         {
             var time = frame.timestamp;
             var element = createElementWithClass("div", "frame");
-            element.createChild("div", "thumbnail").createChild("img").src = "data:image/jpg;base64," + frame.imageData;
+            element.createChild("div", "thumbnail").createChild("img").src = "data:image/jpg;base64," + imageDataForFrame.get(frame);
             if (!skipTimeLabel)
                 element.createChild("div", "time").textContent = Number.millisToString(time - zeroTime);
             element.addEventListener("mousedown", this._onMouseEvent.bind(this, WebInspector.FilmStripView.Events.FrameSelected, time), false);
             element.addEventListener("mouseenter", this._onMouseEvent.bind(this, WebInspector.FilmStripView.Events.FrameEnter, time), false);
             element.addEventListener("mouseout", this._onMouseEvent.bind(this, WebInspector.FilmStripView.Events.FrameExit, time), false);
             element.addEventListener("dblclick", this._onDoubleClick.bind(this, frame), false);
             this.contentElement.appendChild(element);
             return element;
         }
 
@@ skipping 22 matching lines @@
         function comparator(time, frame)
         {
             return time - frame.timestamp;
         }
 
         var width = this.contentElement.clientWidth;
         var scale = this._spanTime / width;
 
         // Calculate frame width basing on the first frame.
         var tempElement = createElementWithClass("div", "frame");
-        tempElement.createChild("div", "thumbnail").createChild("img").src = "data:image/jpg;base64," + frames[0].imageData;
+        tempElement.createChild("div", "thumbnail").createChild("img").src = "data:image/jpg;base64," + imageDataForFrame.get(frames[0]);
         var frameWidth = Math.ceil(WebInspector.measurePreferredSize(tempElement, this.contentElement).width);
         if (!frameWidth)
             return;
 
         for (var pos = frameWidth; pos < width; pos += frameWidth) {
             var time = pos * scale + zeroTime;
             var index = frames.upperBound(time, comparator) - 1;
             var element = index >= 0 ? createElementForFrame.call(this, frames[index], true) : createEmptyElement.call(this);
             element.style.width = frameWidth + "px";
         }
@@ skipping 141 matching lines @@
 
     _onLastFrame: function()
     {
         this._index = this._frames.length - 1;
         this._render();
     },
 
     _render: function()
     {
         var frame = this._frames[this._index];
-        this._imageElement.src = "data:image/jpg;base64," + frame.imageData;
+        frame.imageDataPromise().then(onGotImageData.bind(this));
+        /**
+         * @param {?string} data
+         * @this {WebInspector.DialogDelegate}
+         */
+        function onGotImageData(data)
+        {
+            if (data)
+                this._imageElement.src = "data:image/jpg;base64," + data;
+        }
         this._timeLabel.textContent = Number.millisToString(frame.timestamp - this._zeroTime);
     },
 
     __proto__: WebInspector.DialogDelegate.prototype
 }