[Android] Implementation of overscroll effect for Android L

cc/trees/layer_tree_host_impl.cc

 // Copyright 2011 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.
 
 #include "cc/trees/layer_tree_host_impl.h"
 
 #include <algorithm>
 #include <limits>
 
 #include "base/basictypes.h"
@@ skipping 2654 matching lines @@
 
   // Scrolling along an axis resets accumulated root overscroll for that axis.
   if (did_scroll_x)
     accumulated_root_overscroll_.set_x(0);
   if (did_scroll_y)
     accumulated_root_overscroll_.set_y(0);
 
   accumulated_root_overscroll_ += unused_root_delta;
   bool did_overscroll = !unused_root_delta.IsZero();
   if (did_overscroll && input_handler_client_) {
-    input_handler_client_->DidOverscroll(accumulated_root_overscroll_,
-                                         unused_root_delta);
+    input_handler_client_->DidOverscroll(
+        viewport_point, accumulated_root_overscroll_, unused_root_delta);
   }
 
   return did_scroll_content || did_scroll_top_controls;
 }
 
 // This implements scrolling by page as described here:
 // http://msdn.microsoft.com/en-us/library/windows/desktop/ms645601(v=vs.85).aspx#_win32_The_Mouse_Wheel
 // for events with WHEEL_PAGESCROLL set.
 bool LayerTreeHostImpl::ScrollVerticallyByPage(const gfx::Point& viewport_point,
                                                ScrollDirection direction) {
@@ skipping 603 matching lines @@
   ResourceFormat format = resource_provider_->best_texture_format();
   switch (bitmap.GetFormat()) {
     case UIResourceBitmap::RGBA8:
       break;
     case UIResourceBitmap::ALPHA_8:
       format = ALPHA_8;
       break;
     case UIResourceBitmap::ETC1:
       format = ETC1;
       break;
-  };
+  }
   id = resource_provider_->CreateResource(
       bitmap.GetSize(),
       wrap_mode,
       ResourceProvider::TextureUsageAny,
       format);
 
   UIResourceData data;
   data.resource_id = id;
   data.size = bitmap.GetSize();
   data.opaque = bitmap.GetOpaque();
@@ skipping 95 matching lines @@
 }
 
 void LayerTreeHostImpl::UnregisterPictureLayerImpl(PictureLayerImpl* layer) {
   std::vector<PictureLayerImpl*>::iterator it =
       std::find(picture_layers_.begin(), picture_layers_.end(), layer);
   DCHECK(it != picture_layers_.end());
   picture_layers_.erase(it);
 }
 
 }  // namespace cc