Plumb an overscroll callback form the compositor to the Android UI thread.

content/browser/renderer_host/render_widget_host_view_guest.cc

 // Copyright (c) 2012 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 "base/bind_helpers.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "content/browser/browser_plugin/browser_plugin_guest.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_guest.h"
@@ skipping 309 matching lines @@
     const SkBitmap& zoomed_bitmap) {
 }
 
 void RenderWidgetHostViewGuest::SetCachedPageScaleFactorLimits(
     float minimum_scale,
     float maximum_scale) {
 }
 
 void RenderWidgetHostViewGuest::UpdateFrameInfo(
     const gfx::Vector2d& scroll_offset,
+    const gfx::Vector2d& unused_scroll_delta,
     float page_scale_factor,
     float min_page_scale_factor,
     float max_page_scale_factor,
     const gfx::Size& content_size,
     const gfx::Vector2dF& controls_offset,
     const gfx::Vector2dF& content_offset) {
 }
 
 void RenderWidgetHostViewGuest::HasTouchEventHandlers(bool need_touch_events) {
 }
@@ skipping 21 matching lines @@
 void RenderWidgetHostViewGuest::WillWmDestroy() {
 }
 #endif
 
 #if defined(OS_POSIX) || defined(USE_AURA)
 void RenderWidgetHostViewGuest::GetScreenInfo(WebKit::WebScreenInfo* results) {
 }
 #endif  // defined(OS_POSIX) || defined(USE_AURA)
 
 }  // namespace content