Set the AudioManager factory before the browser main loop.

chromecast/browser/cast_browser_main_parts.h

Index: chromecast/browser/cast_browser_main_parts.h
diff --git a/chromecast/browser/cast_browser_main_parts.h b/chromecast/browser/cast_browser_main_parts.h
index 7c9baf49ad79fddd853d9e3d89093edf19d4f489..777343d7f3ed2d8d6816ecdc10b6908794b0eec0 100644
--- a/chromecast/browser/cast_browser_main_parts.h
+++ b/chromecast/browser/cast_browser_main_parts.h
@@ -10,6 +10,7 @@
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/browser_main_parts.h"
 #include "content/public/common/main_function_params.h"
+#include "media/audio/audio_manager_factory.h"

[derekjchow1, 2015/04/30 17:33:15]

Don't include. Forward declare ::media::AudioManagerFactory.

[slan, 2015/04/30 17:52:04]

Done.

 
 namespace chromecast {
 namespace shell {
@@ -18,9 +19,12 @@ class URLRequestContextFactory;
 
 class CastBrowserMainParts : public content::BrowserMainParts {
  public:
+  // This class does not take ownership of |url_request_content_factory|.
+  // AudioManagerFactory is a platform factory used to create AudioManagers.

[gunsch, 2015/04/30 17:29:36]

second line unnecessary, that can be gleaned from reading the
AudioManagerFactory interface

[slan, 2015/04/30 17:52:04]

Done.

   CastBrowserMainParts(
       const content::MainFunctionParams& parameters,
-      URLRequestContextFactory* url_request_context_factory);
+      URLRequestContextFactory* url_request_context_factory,
+      scoped_ptr<::media::AudioManagerFactory> audio_manager_factory);
   ~CastBrowserMainParts() override;
 
   // content::BrowserMainParts implementation:
@@ -35,6 +39,7 @@ class CastBrowserMainParts : public content::BrowserMainParts {
   scoped_ptr<CastBrowserProcess> cast_browser_process_;
   const content::MainFunctionParams parameters_;  // For running browser tests.
   URLRequestContextFactory* const url_request_context_factory_;
+  scoped_ptr<::media::AudioManagerFactory> audio_manager_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(CastBrowserMainParts);
 };