Restrict salient image size before storing

components/enhanced_bookmarks/bookmark_image_service.h

Index: components/enhanced_bookmarks/bookmark_image_service.h
diff --git a/components/enhanced_bookmarks/bookmark_image_service.h b/components/enhanced_bookmarks/bookmark_image_service.h
index 8ec1fa8a86251fc1f9d4c9520e83a8775efd84d4..2075439d728ccf29231aca9eb72f12649dba2798 100644
--- a/components/enhanced_bookmarks/bookmark_image_service.h
+++ b/components/enhanced_bookmarks/bookmark_image_service.h
@@ -84,17 +84,20 @@ class BookmarkImageService : public KeyedService,
   // Returns true if the image for the page_url is currently being fetched.
   bool IsPageUrlInProgress(const GURL& page_url);
 
-  // Stores the image to local storage. If update_bookmarks is true, relates the
-  // corresponding bookmark to image_url.
+  // Resizes the image, stores the new image to local storage. If
+  // update_bookmarks is true, relates the corresponding bookmark to image_url.
   void ProcessNewImage(const GURL& page_url,
                        bool update_bookmarks,
-                       const gfx::Image& image,
-                       const GURL& image_url);
+                       const GURL& image_url,
+                       const gfx::Image& image);
+
+  // Resizes large images to proper size that fits device display. This method
+  // should _not_ run on the UI thread.
+  virtual gfx::Image ResizeImage(gfx::Image image) = 0;
 
   // Sets a new image for a bookmark. If the given page_url is bookmarked and
   // the image is retrieved from the image_url, then the image is locally
   // stored. If update_bookmark is true the URL is also added to the bookmark.
-  // This is the only method subclass needs to implement.
   virtual void RetrieveSalientImage(
       const GURL& page_url,
       const GURL& image_url,
@@ -122,6 +125,12 @@ class BookmarkImageService : public KeyedService,
   // Processes the requests that have been waiting on an image.
   void ProcessRequests(const GURL& page_url, const ImageRecord& image);
 
+  // Implements the private UI-thread logics for ProcessNewImage().
+  void ProcessNewImageInternal(const GURL& page_url,
+                               bool update_bookmarks,
+                               const GURL& image_url,
+                               const gfx::Image& image);
+
   // Once an image is retrieved this method updates the store with it. Returns
   // the newly formed ImageRecord.  This is typically called on |pool_|, the
   // background sequenced worker pool for this object.