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

cc/trees/layer_tree_host_unittest.cc

 // Copyright 2011 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/trees/layer_tree_host.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 6644 matching lines @@
 // frame's metadata.
 class LayerTreeHostTestPaintedDeviceScaleFactor : public LayerTreeHostTest {
  protected:
   void BeginTest() override {
     layer_tree_host()->SetPaintedDeviceScaleFactor(2.0f);
     EXPECT_EQ(1.0f, layer_tree_host()->device_scale_factor());
     PostSetNeedsCommitToMainThread();
   }
 
   void SwapBuffersOnThread(LayerTreeHostImpl* host_impl, bool result) override {
-    EXPECT_EQ(2.0f,
-              output_surface()->last_sent_frame().metadata.device_scale_factor);
+    EXPECT_EQ(
+        2.0f,
+        output_surface()->last_sent_frame()->metadata.device_scale_factor);
     EXPECT_EQ(2.0f, host_impl->active_tree()->painted_device_scale_factor());
     EXPECT_EQ(1.0f, host_impl->active_tree()->device_scale_factor());
     EndTest();
   }
 
   void AfterTest() override {}
 };
 
 SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostTestPaintedDeviceScaleFactor);
 
 }  // namespace
 }  // namespace cc