Revert of [blink] Unique pointers in Platform.h

content/shell/test_runner/web_test_interfaces.h

 // Copyright 2013 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 CONTENT_SHELL_TEST_RUNNER_WEB_TEST_INTERFACES_H_
 #define CONTENT_SHELL_TEST_RUNNER_WEB_TEST_INTERFACES_H_
 
 #include <memory>
 #include <vector>
 
@@ skipping 35 matching lines @@
   void SetDelegate(WebTestDelegate* delegate);
   void ResetAll();
   bool TestIsRunning();
   void SetTestIsRunning(bool running);
   void ConfigureForTestWithURL(const blink::WebURL& test_url,
                                bool generate_pixels);
 
   WebTestRunner* TestRunner();
   blink::WebThemeEngine* ThemeEngine();
 
-  std::unique_ptr<blink::WebMediaStreamCenter> CreateMediaStreamCenter(
+  blink::WebMediaStreamCenter* CreateMediaStreamCenter(
       blink::WebMediaStreamCenterClient* client);
-  std::unique_ptr<blink::WebRTCPeerConnectionHandler>
-  CreateWebRTCPeerConnectionHandler(
+  blink::WebRTCPeerConnectionHandler* CreateWebRTCPeerConnectionHandler(
       blink::WebRTCPeerConnectionHandlerClient* client);
 
-  std::unique_ptr<blink::WebMIDIAccessor> CreateMIDIAccessor(
+  blink::WebMIDIAccessor* CreateMIDIAccessor(
       blink::WebMIDIAccessorClient* client);
 
-  std::unique_ptr<blink::WebAudioDevice> CreateAudioDevice(
-      double sample_rate,
-      int frames_per_buffer);
+  blink::WebAudioDevice* CreateAudioDevice(double sample_rate,
+                                           int frames_per_buffer);
 
   TestInterfaces* GetTestInterfaces();
 
   // Creates a WebFrameClient implementation providing test behavior (i.e.
   // forwarding javascript console output to the test harness).  The caller
   // should guarantee that the returned object won't be used beyond the lifetime
   // of WebTestInterfaces and/or the lifetime of |web_view_test_proxy_base|.
   std::unique_ptr<WebFrameTestClient> CreateWebFrameTestClient(
       WebViewTestProxyBase* web_view_test_proxy_base,
       WebFrameTestProxyBase* web_frame_test_proxy_base);
@@ skipping 17 matching lines @@
 
  private:
   std::unique_ptr<TestInterfaces> interfaces_;
 
   DISALLOW_COPY_AND_ASSIGN(WebTestInterfaces);
 };
 
 }  // namespace test_runner
 
 #endif  // CONTENT_SHELL_TEST_RUNNER_WEB_TEST_INTERFACES_H_