Plugs in the new thumbnailing algorithm to ThumbnailTabHelper.

chrome/browser/thumbnails/thumbnail_service_impl.h

Index: chrome/browser/thumbnails/thumbnail_service_impl.h
diff --git a/chrome/browser/thumbnails/thumbnail_service_impl.h b/chrome/browser/thumbnails/thumbnail_service_impl.h
index 0205aac60cf3685fb4a65bad9e0c4108d3fbbf1d..a287c1f783bf637dfdcc31a9b8ade962404c4e4b 100644
--- a/chrome/browser/thumbnails/thumbnail_service_impl.h
+++ b/chrome/browser/thumbnails/thumbnail_service_impl.h
@@ -37,7 +37,11 @@ class ThumbnailServiceImpl : public ThumbnailService {
  private:
   virtual ~ThumbnailServiceImpl();
 
+  // True if thumbnail retargetting feature is enabled (Finch/flags).
+  static bool GetThumbnailRetargettingEnabled();

[mazda, 2013/05/23 19:13:57]

Because this is used only in .cc, how about hiding this in .cc?
Also I prefer the name IsThumbnailRetargettingEnabled.

[motek., 2013/05/27 16:54:54]

Done.

+
   scoped_refptr<history::TopSites> top_sites_;
+  bool use_thumbnail_retargetting_;
 
   DISALLOW_COPY_AND_ASSIGN(ThumbnailServiceImpl);
 };