[Android] Implement asynchronous zero-copy bitmap capture API.

content/browser/renderer_host/render_widget_host_view_mac.mm

Index: content/browser/renderer_host/render_widget_host_view_mac.mm
diff --git a/content/browser/renderer_host/render_widget_host_view_mac.mm b/content/browser/renderer_host/render_widget_host_view_mac.mm
index bcceafd414b132ed4151df346f92e9604a7f3375..4d79be84d0814f8ce2eb68e3bbd2c59b9c6bb192 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac.mm
+++ b/content/browser/renderer_host/render_widget_host_view_mac.mm
@@ -1184,7 +1184,8 @@ void RenderWidgetHostViewMac::CopyFromCompositingSurface(
     const gfx::Rect& src_subrect,
     const gfx::Size& dst_size,
     const base::Callback<void(bool, const SkBitmap&)>& callback,
-    const SkBitmap::Config config) {
+    const SkBitmap::Config config,
+    scoped_ptr<SkBitmap> bitmap) {
   if (config != SkBitmap::kARGB_8888_Config) {
     NOTIMPLEMENTED();
     callback.Run(false, SkBitmap());