Make cc::CompositorFrames movable [Part 2 of 2]

cc/surfaces/surface_hittest.cc

 // Copyright 2015 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 "cc/surfaces/surface_hittest.h"
 
 #include "cc/output/compositor_frame.h"
 #include "cc/output/delegated_frame_data.h"
 #include "cc/quads/draw_quad.h"
 #include "cc/quads/render_pass_draw_quad.h"
@@ skipping 216 matching lines @@
   return false;
 }
 
 const RenderPass* SurfaceHittest::GetRenderPassForSurfaceById(
     SurfaceId surface_id,
     const RenderPassId& render_pass_id) {
   Surface* surface = manager_->GetSurfaceForId(surface_id);
   if (!surface)
     return nullptr;
 
-  const CompositorFrame* surface_frame = surface->GetEligibleFrame();
-  if (!surface_frame)
+  const CompositorFrame& surface_frame = surface->GetEligibleFrame();
+  if (!surface_frame.delegated_frame_data)
     return nullptr;
 
   const DelegatedFrameData* frame_data =
-      surface_frame->delegated_frame_data.get();
+      surface_frame.delegated_frame_data.get();
   if (frame_data->render_pass_list.empty())
     return nullptr;
 
   if (!render_pass_id.IsValid())
     return frame_data->render_pass_list.back().get();
 
   for (const auto& render_pass : frame_data->render_pass_list) {
     if (render_pass->id == render_pass_id)
       return render_pass.get();
   }
@@ skipping 20 matching lines @@
     return false;
   }
 
   *point_in_quad_space = point_in_render_pass_space;
   target_to_quad_transform->TransformPoint(point_in_quad_space);
 
   return quad->rect.Contains(*point_in_quad_space);
 }
 
 }  // namespace cc