Switch base::Value typemapping to be by value instead of by unique_ptr.

content/browser/renderer_host/media/video_capture_controller_unittest.cc

 // Copyright (c) 2012 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/renderer_host/media/video_capture_controller.h"
 
 #include <stdint.h>
 #include <string.h>
 
 #include <memory>
@@ skipping 70 matching lines @@
   }
   void OnBufferDestroyed(VideoCaptureControllerID id, int buffer_id) override {
     DoBufferDestroyed(id, buffer_id);
   }
   void OnBufferReady(
       VideoCaptureControllerID id,
       int buffer_id,
       const media::mojom::VideoFrameInfoPtr& frame_info) override {
     EXPECT_EQ(expected_pixel_format_, frame_info->pixel_format);
     media::VideoFrameMetadata metadata;
-    metadata.MergeInternalValuesFrom(*frame_info->metadata);
+    metadata.MergeInternalValuesFrom(frame_info->metadata);
     base::TimeTicks reference_time;
     EXPECT_TRUE(metadata.GetTimeTicks(media::VideoFrameMetadata::REFERENCE_TIME,
                                       &reference_time));
     DoBufferReady(id, frame_info->coded_size);
     if (enable_auto_return_buffer_on_buffer_ready_) {
       base::ThreadTaskRunnerHandle::Get()->PostTask(
           FROM_HERE, base::Bind(&VideoCaptureController::ReturnBuffer,
                                 base::Unretained(controller_), id, this,
                                 buffer_id, resource_utilization_));
     }
@@ skipping 761 matching lines @@
     EXPECT_CALL(*client_b_, OnStarted(_));
     device_client_->OnStarted();
 
     // VideoCaptureController will take care of the OnStarted event for the
     // clients who join later.
     EXPECT_CALL(*client_a_, OnStarted(_));
     controller_->AddClient(client_a_route_2, client_a_.get(), 200, session_200);
   }
 }
 }  // namespace content