Update Surface ID Terminology

content/browser/frame_host/render_widget_host_view_child_frame.h

Index: content/browser/frame_host/render_widget_host_view_child_frame.h
diff --git a/content/browser/frame_host/render_widget_host_view_child_frame.h b/content/browser/frame_host/render_widget_host_view_child_frame.h
index eef16d09fd2961751e42ea431a973173e50b9e67..3cbd47573dfd9bcce0e0a8ba28bc5392e839d2b8 100644
--- a/content/browser/frame_host/render_widget_host_view_child_frame.h
+++ b/content/browser/frame_host/render_widget_host_view_child_frame.h
@@ -130,7 +130,7 @@ class CONTENT_EXPORT RenderWidgetHostViewChildFrame
                               InputEventAckState ack_result) override;
   bool LockMouse() override;
   void UnlockMouse() override;
-  uint32_t GetSurfaceIdNamespace() override;
+  uint32_t GetSurfaceClientId() override;
   void ProcessKeyboardEvent(const NativeWebKeyboardEvent& event) override;
   void ProcessMouseEvent(const blink::WebMouseEvent& event,
                          const ui::LatencyInfo& latency) override;
@@ -237,8 +237,8 @@ class CONTENT_EXPORT RenderWidgetHostViewChildFrame
   cc::BeginFrameSource* begin_frame_source_;
   cc::BeginFrameArgs last_begin_frame_args_;
   bool observing_begin_frame_source_;
-  // The surface id namespace of the parent RenderWidgetHostView.  0 if none.
-  uint32_t parent_surface_id_namespace_;
+  // The surface client ID of the parent RenderWidgetHostView.  0 if none.
+  uint32_t parent_surface_client_id_;
 
   base::WeakPtrFactory<RenderWidgetHostViewChildFrame> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewChildFrame);