Aura: Support --enable-partial-swap with --composite-to-mailbox

content/browser/renderer_host/render_widget_host_view_aura.h

Index: content/browser/renderer_host/render_widget_host_view_aura.h
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index 0ed95a0ed0c0963722f3999924b8b28839cac0fe..41bae02b43f941cf883d997c5bc724bbc2538873 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -464,6 +464,15 @@ class RenderWidgetHostViewAura
                       const ui::LatencyInfo& latency_info,
                       const BufferPresentedCallback& ack_callback);
 
+  // The common entry point for partial buffer updates from renderer
+  // and GPU process.
+  void SubBufferPosted(const gfx::Size& size,
+                       float surface_scale_factor,
+                       const std::string& mailbox_name,
+                       const ui::LatencyInfo& latency_info,
+                       const gfx::Rect& damage_rect,
+                       const BufferPresentedCallback& ack_callback);
+
   bool SwapBuffersPrepare(const gfx::Rect& surface_rect,
                           float surface_scale_factor,
                           const gfx::Rect& damage_rect,