Compile several targets in Gallery in gyp v2.

ui/file_manager/gallery/js/image_editor/image_view.js

 // Copyright 2014 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.
 
 /**
  * The overlay displaying the image.
  *
  * @param {!HTMLElement} container The container element.
  * @param {!Viewport} viewport The viewport.
  * @param {!MetadataModel} metadataModel
@@ skipping 342 matching lines @@
   if (!(effect instanceof ImageView.Effect.None)) {
     // Skip effects when reloading repeatedly very quickly.
     var time = Date.now();
     if (this.lastLoadTime_ &&
         (time - this.lastLoadTime_) < ImageView.FAST_SCROLL_INTERVAL) {
       effect = new ImageView.Effect.None();
     }
     this.lastLoadTime_ = time;
   }
 
-  ImageUtil.metrics.startInterval(ImageUtil.getMetricName('DisplayTime'));
+  metrics.startInterval(ImageUtil.getMetricName('DisplayTime'));
 
   var self = this;
 
   this.contentItem_ = item;
   this.contentRevision_ = -1;
 
   switch (ImageView.getLoadTarget(item, effect)) {
     case ImageView.LoadTarget.CACHED_MAIN_IMAGE:
       displayMainImage(
           ImageView.LoadType.CACHED_FULL,
@@ skipping 88 matching lines @@
     var animationDuration = 0;
     if (!(previewShown && loadType === ImageView.LoadType.ERROR)) {
       var replaceEffect = previewShown ? null : effect;
       animationDuration = replaceEffect ? replaceEffect.getSafeInterval() : 0;
       self.replace(content, replaceEffect);
       if (!previewShown && displayCallback) displayCallback();
     }
 
     if (loadType !== ImageView.LoadType.ERROR &&
         loadType !== ImageView.LoadType.CACHED_SCREEN) {
-      ImageUtil.metrics.recordInterval(ImageUtil.getMetricName('DisplayTime'));
+      metrics.recordInterval(ImageUtil.getMetricName('DisplayTime'));
     }
-    ImageUtil.metrics.recordEnum(ImageUtil.getMetricName('LoadMode'),
+    metrics.recordEnum(ImageUtil.getMetricName('LoadMode'),
         loadType, Object.keys(ImageView.LoadType).length);
 
     if (loadType === ImageView.LoadType.ERROR &&
         !navigator.onLine && !item.getMetadataItem().present) {
       loadType = ImageView.LoadType.OFFLINE;
     }
     if (loadCallback) loadCallback(loadType, animationDuration, opt_error);
   }
 };
 
@@ skipping 481 matching lines @@
 
 ImageView.Effect.Rotate.prototype = { __proto__: ImageView.Effect.prototype };
 
 /**
  * @override
  */
 ImageView.Effect.Rotate.prototype.transform = function(element, viewport) {
   return viewport.getRotatingTransformation(
       element.width, element.height, this.orientation_ ? -1 : 1);
 };