Strip out stream counting from AudioRendererHost.

content/public/test/mock_render_process_host.h

Index: content/public/test/mock_render_process_host.h
diff --git a/content/public/test/mock_render_process_host.h b/content/public/test/mock_render_process_host.h
index 358a26728d5916455882f5e8fe960c54140b6455..10ef44d0eb1f83274bb08b63c4fba51bf0991396 100644
--- a/content/public/test/mock_render_process_host.h
+++ b/content/public/test/mock_render_process_host.h
@@ -57,8 +57,9 @@ class MockRenderProcessHost : public RenderProcessHost {
   void WidgetRestored() override;
   void WidgetHidden() override;
   int VisibleWidgetCount() const override;
-  void AudioStateChanged() override;
   bool IsForGuestsOnly() const override;
+  void OnAudioStreamAdded() override;
+  void OnAudioStreamRemoved() override;
   StoragePartition* GetStoragePartition() const override;
   virtual void AddWord(const base::string16& word);
   bool Shutdown(int exit_code, bool wait) override;