PepperPlatformAudioInputImpl: support audio input device selection.

webkit/plugins/ppapi/mock_plugin_delegate.h

Index: webkit/plugins/ppapi/mock_plugin_delegate.h
diff --git a/webkit/plugins/ppapi/mock_plugin_delegate.h b/webkit/plugins/ppapi/mock_plugin_delegate.h
index 38bfa5888c8747033cfe577d32fc1c057e45669c..98b921150f23d51d4d8c92c98de917127c589519 100644
--- a/webkit/plugins/ppapi/mock_plugin_delegate.h
+++ b/webkit/plugins/ppapi/mock_plugin_delegate.h
@@ -39,11 +39,12 @@ class MockPluginDelegate : public PluginDelegate {
   virtual PlatformAudioOutput* CreateAudioOutput(
       uint32_t sample_rate,
       uint32_t sample_count,
-      PlatformAudioCommonClient* client);
+      PlatformAudioOutputClient* client);
   virtual PlatformAudioInput* CreateAudioInput(
+      const std::string& device_id,
       uint32_t sample_rate,
       uint32_t sample_count,
-      PlatformAudioCommonClient* client);
+      PlatformAudioInputClient* client);
   virtual Broker* ConnectToBroker(PPB_Broker_Impl* client);
   virtual void NumberOfFindResultsChanged(int identifier,
                                           int total,