Avoid unnecessary LocalSurfaceId allocation in RenderWidgetHostViewChildFrame/Guest

content/browser/frame_host/render_widget_host_view_guest.cc

 // Copyright 2014 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/frame_host/render_widget_host_view_guest.h"
 
 #include <utility>
 
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
@@ skipping 254 matching lines @@
  if (platform_view_)
    platform_view_->SetNeedsBeginFrames(needs_begin_frames);
 }
 
 void RenderWidgetHostViewGuest::SetTooltipText(
     const base::string16& tooltip_text) {
   if (guest_)
     guest_->SetTooltipText(tooltip_text);
 }
 
-bool RenderWidgetHostViewGuest::ShouldCreateNewSurfaceId(
-    uint32_t compositor_frame_sink_id,
-    const cc::CompositorFrame& frame) {
-  return (guest_ && guest_->has_attached_since_surface_set()) ||
-         RenderWidgetHostViewChildFrame::ShouldCreateNewSurfaceId(
-             compositor_frame_sink_id, frame);
-}
-
 void RenderWidgetHostViewGuest::SendSurfaceInfoToEmbedderImpl(
     const cc::SurfaceInfo& surface_info,
     const cc::SurfaceSequence& sequence) {
   if (guest_ && !guest_->is_in_destruction())
     guest_->SetChildFrameSurface(surface_info, sequence);
 }
 
 void RenderWidgetHostViewGuest::OnSwapCompositorFrame(
     uint32_t compositor_frame_sink_id,
     cc::CompositorFrame frame) {
@@ skipping 346 matching lines @@
     if (gesture_event.type() == blink::WebInputEvent::GestureScrollUpdate &&
         gesture_event.data.scrollUpdate.inertialPhase ==
             blink::WebGestureEvent::MomentumPhase) {
       return;
     }
     host_->ForwardGestureEvent(gesture_event);
     return;
   }
 }
 
+bool RenderWidgetHostViewGuest::HasEmbedderChanged() {
+  return guest_ && guest_->has_attached_since_surface_set();
+}
+
 }  // namespace content