PepperPlatformAudioInputImpl: support audio input device selection.

webkit/plugins/ppapi/mock_plugin_delegate.cc

Index: webkit/plugins/ppapi/mock_plugin_delegate.cc
diff --git a/webkit/plugins/ppapi/mock_plugin_delegate.cc b/webkit/plugins/ppapi/mock_plugin_delegate.cc
index 51713efeb01f0f6e6015d2c77f6000a55a4e09a5..c2e4b3d90b39078c9261c97abea437c076878bd1 100644
--- a/webkit/plugins/ppapi/mock_plugin_delegate.cc
+++ b/webkit/plugins/ppapi/mock_plugin_delegate.cc
@@ -82,14 +82,15 @@ uint32_t MockPluginDelegate::GetAudioHardwareOutputBufferSize() {
 MockPluginDelegate::PlatformAudioOutput* MockPluginDelegate::CreateAudioOutput(
     uint32_t sample_rate,
     uint32_t sample_count,
-    PlatformAudioCommonClient* client) {
+    PlatformAudioOutputClient* client) {
   return NULL;
 }
 
 MockPluginDelegate::PlatformAudioInput* MockPluginDelegate::CreateAudioInput(
+    const std::string& device_id,
     uint32_t sample_rate,
     uint32_t sample_count,
-    PlatformAudioCommonClient* client) {
+    PlatformAudioInputClient* client) {
   return NULL;
 }