Revert of Implement webview.captureVisibleRegion()

content/browser/compositor/delegated_frame_host.h

Index: content/browser/compositor/delegated_frame_host.h
diff --git a/content/browser/compositor/delegated_frame_host.h b/content/browser/compositor/delegated_frame_host.h
index e51e88046712d92850657db30cd9db1bb2cdec50..21dc4e0c8f95341b2ca5e2cbbdbcb27b28ed4bf4 100644
--- a/content/browser/compositor/delegated_frame_host.h
+++ b/content/browser/compositor/delegated_frame_host.h
@@ -219,6 +219,21 @@
 
   // Called after async thumbnailer task completes.  Scales and crops the result
   // of the copy.
+  static void CopyFromCompositingSurfaceHasResult(
+      const gfx::Size& dst_size_in_pixel,
+      const SkColorType color_type,
+      const ReadbackRequestCallback& callback,
+      scoped_ptr<cc::CopyOutputResult> result);
+  static void PrepareTextureCopyOutputResult(
+      const gfx::Size& dst_size_in_pixel,
+      const SkColorType color_type,
+      const ReadbackRequestCallback& callback,
+      scoped_ptr<cc::CopyOutputResult> result);
+  static void PrepareBitmapCopyOutputResult(
+      const gfx::Size& dst_size_in_pixel,
+      const SkColorType color_type,
+      const ReadbackRequestCallback& callback,
+      scoped_ptr<cc::CopyOutputResult> result);
   static void CopyFromCompositingSurfaceHasResultForVideo(
       base::WeakPtr<DelegatedFrameHost> rwhva,
       scoped_refptr<OwnedMailbox> subscriber_texture,