Allow CastContentBrowserClient to customise media pipeline device

chromecast/browser/cast_content_browser_client.h

 // Copyright 2014 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 CHROMECAST_BROWSER_CAST_CONTENT_BROWSER_CLIENT_H_
 #define CHROMECAST_BROWSER_CAST_CONTENT_BROWSER_CLIENT_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 12 matching lines @@
 
 namespace media {
 class AudioManagerFactory;
 }
 
 namespace net {
 class HostResolver;
 }
 
 namespace chromecast {
+namespace media {
+class MediaPipelineDevice;
+class MediaPipelineDeviceParams;
+}
+
 namespace shell {
 
 class CastBrowserMainParts;
 class URLRequestContextFactory;
 
 class CastContentBrowserClient: public content::ContentBrowserClient {
  public:
   CastContentBrowserClient();
   ~CastContentBrowserClient() override;
 
   // Appends extra command line arguments before launching a new process.
   void PlatformAppendExtraCommandLineSwitches(base::CommandLine* command_line);
 
   // Returns any BrowserMessageFilters from the platform implementation that
   // should be added when launching a new render process.
   std::vector<scoped_refptr<content::BrowserMessageFilter>>
   PlatformGetBrowserMessageFilters();
 
+#if !defined(OS_ANDROID)
+  // Creates a MediaPipelineDevice (CMA backend) for media playback, called
+  // once per media player instance.
+  scoped_ptr<media::MediaPipelineDevice> PlatformCreateMediaPipelineDevice(
+      const media::MediaPipelineDeviceParams& params);
+#endif
+
   // content::ContentBrowserClient implementation:
   content::BrowserMainParts* CreateBrowserMainParts(
       const content::MainFunctionParams& parameters) override;
   void RenderProcessWillLaunch(content::RenderProcessHost* host) override;
   net::URLRequestContextGetter* CreateRequestContext(
       content::BrowserContext* browser_context,
       content::ProtocolHandlerMap* protocol_handlers,
       content::URLRequestInterceptorScopedVector request_interceptors)
       override;
   bool IsHandledURL(const GURL& url) override;
@@ skipping 73 matching lines @@
 
   scoped_ptr<URLRequestContextFactory> url_request_context_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CastContentBrowserClient);
 };
 
 }  // namespace shell
 }  // namespace chromecast
 
 #endif  // CHROMECAST_BROWSER_CAST_CONTENT_BROWSER_CLIENT_H_