Compile several targets in Gallery in gyp v2.

ui/file_manager/gallery/js/slide_mode.js

Index: ui/file_manager/gallery/js/slide_mode.js
diff --git a/ui/file_manager/gallery/js/slide_mode.js b/ui/file_manager/gallery/js/slide_mode.js
index 12e1885a18898c5f8783c50594836b0af1faa8b7..75df0b37056b25d23856c2824fdcb91e07829268 100644
--- a/ui/file_manager/gallery/js/slide_mode.js
+++ b/ui/file_manager/gallery/js/slide_mode.js
@@ -1039,7 +1039,7 @@ SlideMode.prototype.itemLoaded_ = function(
     this.errorBanner_.show('GALLERY_IMAGE_OFFLINE');
   }
 
-  ImageUtil.metrics.recordUserAction(ImageUtil.getMetricName('View'));
+  metrics.recordUserAction(ImageUtil.getMetricName('View'));
 
   var toMillions = function(number) {
     return Math.round(number / (1000 * 1000));
@@ -1047,19 +1047,19 @@ SlideMode.prototype.itemLoaded_ = function(
 
   var metadata = item.getMetadataItem();
   if (metadata) {
-    ImageUtil.metrics.recordSmallCount(ImageUtil.getMetricName('Size.MB'),
+    metrics.recordSmallCount(ImageUtil.getMetricName('Size.MB'),
         toMillions(metadata.size));
   }
 
   var image = this.imageView_.getImage();
-  ImageUtil.metrics.recordSmallCount(ImageUtil.getMetricName('Size.MPix'),
+  metrics.recordSmallCount(ImageUtil.getMetricName('Size.MPix'),
       toMillions(image.width * image.height));
 
   var extIndex = entry.name.lastIndexOf('.');
   var ext = extIndex < 0 ? '' :
       entry.name.substr(extIndex + 1).toLowerCase();
   if (ext === 'jpeg') ext = 'jpg';
-  ImageUtil.metrics.recordEnum(
+  metrics.recordEnum(
       ImageUtil.getMetricName('FileType'), ext, ImageUtil.FILE_TYPES);
 
   // Enable or disable buttons for editing and printing.
@@ -1318,7 +1318,7 @@ SlideMode.prototype.saveCurrentImage_ = function(item, callback) {
 
     // Record UMA for the first edit.
     if (this.imageView_.getContentRevision() === 1)
-      ImageUtil.metrics.recordUserAction(ImageUtil.getMetricName('Edit'));
+      metrics.recordUserAction(ImageUtil.getMetricName('Edit'));
 
     // Users can change overwrite original setting only if there is no undo
     // stack and item is original and writable.