Make cc::CompositorFrames movable [Part 1 of 2]

cc/test/surface_hittest_test_helpers.h

 // 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.
 
 #ifndef CC_TEST_SURFACE_HITTEST_TEST_HELPERS_H_
 #define CC_TEST_SURFACE_HITTEST_TEST_HELPERS_H_
 
 #include <map>
 #include <memory>
 
@@ skipping 40 matching lines @@
                            const gfx::Transform& transform,
                            const gfx::Rect& root_rect,
                            const gfx::Rect& quad_rect,
                            SurfaceId surface_id);
 
 void CreateRenderPass(const RenderPassId& render_pass_id,
                       const gfx::Rect& rect,
                       const gfx::Transform& transform_to_root_target,
                       RenderPassList* render_pass_list);
 
-std::unique_ptr<CompositorFrame> CreateCompositorFrameWithRenderPassList(
+CompositorFrame CreateCompositorFrameWithRenderPassList(
     RenderPassList* render_pass_list);
 
-std::unique_ptr<CompositorFrame> CreateCompositorFrame(
-    const gfx::Rect& root_rect,
-    RenderPass** render_pass);
+CompositorFrame CreateCompositorFrame(const gfx::Rect& root_rect,
+                                      RenderPass** render_pass);
 
 class TestSurfaceHittestDelegate : public SurfaceHittestDelegate {
  public:
   TestSurfaceHittestDelegate();
   ~TestSurfaceHittestDelegate();
 
   int reject_target_overrides() const { return reject_target_overrides_; }
   int accept_target_overrides() const { return accept_target_overrides_; }
 
   void AddInsetsForRejectSurface(const SurfaceId& surface_id,
@@ skipping 13 matching lines @@
   std::map<SurfaceId, gfx::Insets> insets_for_reject_;
   std::map<SurfaceId, gfx::Insets> insets_for_accept_;
 
   DISALLOW_COPY_AND_ASSIGN(TestSurfaceHittestDelegate);
 };
 
 }  // namespace test
 }  // namespace cc
 
 #endif  // CC_TEST_SURFACE_HITTEST_TEST_HELPERS_H_