Enable texture readback support for Android

content/browser/renderer_host/render_widget_host_view_aura.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 "content/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 657 matching lines @@
       AsWeakPtr(),
       callback);
   pending_thumbnail_tasks_.push_back(callback);
 
   // Convert |src_subrect| from the views coordinate (upper-left origin) into
   // the OpenGL coordinate (lower-left origin).
   gfx::Rect src_subrect_in_gl = src_subrect;
   src_subrect_in_gl.set_y(GetViewBounds().height() - src_subrect.bottom());
 
   gfx::Rect src_subrect_in_pixel = ConvertRectToPixel(this, src_subrect_in_gl);
-  gl_helper->CopyTextureTo(container->PrepareTexture(),
-                           container->size(),
-                           src_subrect_in_pixel,
-                           dst_size_in_pixel,
-                           addr,
-                           wrapper_callback);
+  gl_helper->CropScaleReadbackAndCleanTexture(container->PrepareTexture(),
+                                              container->size(),
+                                              src_subrect_in_pixel,
+                                              dst_size_in_pixel,
+                                              addr,
+                                              wrapper_callback);
 }
 
 void RenderWidgetHostViewAura::OnAcceleratedCompositingStateChange() {
   // Delay processing the state change until we either get a software frame if
   // switching to software mode or receive a buffers swapped notification
   // if switching to accelerated mode.
   // Sometimes (e.g. on a page load) the renderer will spuriously disable then
   // re-enable accelerated compositing, causing us to flash.
   // TODO(piman): factor the enable/disable accelerated compositing message into
   // the UpdateRect/AcceleratedSurfaceBuffersSwapped messages so that we have
@@ skipping 1184 matching lines @@
     RenderWidgetHost* widget) {
   return new RenderWidgetHostViewAura(widget);
 }
 
 // static
 void RenderWidgetHostViewPort::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content