Allow CastContentBrowserClient to customise media pipeline device

chromecast/browser/cast_content_browser_client.h

Index: chromecast/browser/cast_content_browser_client.h
diff --git a/chromecast/browser/cast_content_browser_client.h b/chromecast/browser/cast_content_browser_client.h
index 5e5c262f92a103087e4856b5e9ec9a72bf0bc45f..6ab5243c566b3081c1d85d65ff19e05df5b54b54 100644
--- a/chromecast/browser/cast_content_browser_client.h
+++ b/chromecast/browser/cast_content_browser_client.h
@@ -30,6 +30,11 @@ class HostResolver;
 }
 
 namespace chromecast {
+namespace media {
+class MediaPipelineDevice;
+class MediaPipelineDeviceParams;
+}
+
 namespace shell {
 
 class CastBrowserMainParts;
@@ -48,6 +53,10 @@ class CastContentBrowserClient: public content::ContentBrowserClient {
   std::vector<scoped_refptr<content::BrowserMessageFilter>>
   PlatformGetBrowserMessageFilters();
 
+  // Factory to create a MediaPipelineDevice.

[gunsch, 2015/06/04 22:57:45]

Comment should describe what the method does, e.g. "Creates a
MediaPipelineDevice to use for playback. Called once per media player instance."

+  scoped_ptr<media::MediaPipelineDevice> PlatformCreateMediaPipelineDevice(

[gunsch, 2015/06/04 22:57:45]

guard with #if !OS_ANDROID

+      const media::MediaPipelineDeviceParams& params);
+
   // content::ContentBrowserClient implementation:
   content::BrowserMainParts* CreateBrowserMainParts(
       const content::MainFunctionParams& parameters) override;