Add RGB565 Texture readback support in gl_helper

content/browser/renderer_host/render_widget_host_view_gtk.cc

Index: content/browser/renderer_host/render_widget_host_view_gtk.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_gtk.cc b/content/browser/renderer_host/render_widget_host_view_gtk.cc
index e08e8d83d4d17709f242a850570215e25970dd09..25db57ba71d435aafa2d2caa68e2f2f61defcc37 100644
--- a/content/browser/renderer_host/render_widget_host_view_gtk.cc
+++ b/content/browser/renderer_host/render_widget_host_view_gtk.cc
@@ -1047,7 +1047,8 @@ BackingStore* RenderWidgetHostViewGtk::AllocBackingStore(
 void RenderWidgetHostViewGtk::CopyFromCompositingSurface(
     const gfx::Rect& src_subrect,
     const gfx::Size& /* dst_size */,
-    const base::Callback<void(bool, const SkBitmap&)>& callback) {
+    const base::Callback<void(bool, const SkBitmap&)>& callback,
+    bool readback_config_rgb565) {

[piman, 2014/01/09 18:12:15]

Fail if readback_config_rgb565 is true?

[sivag, 2014/01/10 12:20:01]

Done.

   // Grab the snapshot from the renderer as that's the only reliable way to
   // readback from the GPU for this platform right now.
   GetRenderWidgetHost()->GetSnapshotFromRenderer(src_subrect, callback);