Expose flash playback status and volume control to content renderer

content/renderer/pepper/ppb_audio_impl.cc

Index: content/renderer/pepper/ppb_audio_impl.cc
diff --git a/content/renderer/pepper/ppb_audio_impl.cc b/content/renderer/pepper/ppb_audio_impl.cc
index 98bf7637f4ad96792b72cb90d7a995c0ca7ff284..887dfc36b3e509ba259658de85b23af10b999f3b 100644
--- a/content/renderer/pepper/ppb_audio_impl.cc
+++ b/content/renderer/pepper/ppb_audio_impl.cc
@@ -9,7 +9,6 @@
 #include "content/renderer/pepper/pepper_plugin_instance_impl.h"
 #include "content/renderer/pepper/plugin_instance_throttler_impl.h"
 #include "content/renderer/render_frame_impl.h"
-#include "content/renderer/render_view_impl.h"
 #include "media/audio/audio_output_controller.h"
 #include "ppapi/c/pp_completion_callback.h"
 #include "ppapi/c/ppb_audio.h"
@@ -83,6 +82,12 @@ PP_Bool PPB_Audio_Impl::StartPlayback() {
     return PP_TRUE;
   }
 
+  if (instance) {
+    RenderFrameImpl* render_frame = instance->render_frame();
+    if (render_frame)
+      render_frame->PepperStartsPlayback(instance, this);
+  }
+
   SetStartPlaybackState();
   return PP_FromBool(audio_->StartPlayback());
 }
@@ -97,6 +102,14 @@ PP_Bool PPB_Audio_Impl::StopPlayback() {
     StartDeferredPlayback();
   }
 
+  PepperPluginInstanceImpl* instance = static_cast<PepperPluginInstanceImpl*>(
+      PepperPluginInstance::Get(pp_instance()));
+  if (instance) {
+    RenderFrameImpl* render_frame = instance->render_frame();
+    if (render_frame)
+      render_frame->PepperStopsPlayback(instance, this);
+  }
+
   if (!playing())
     return PP_TRUE;
   if (!audio_->StopPlayback())
@@ -173,8 +186,17 @@ void PPB_Audio_Impl::StartDeferredPlayback() {
   DCHECK(playback_throttled_);
   playback_throttled_ = false;
 
+  PepperPluginInstanceImpl* instance = static_cast<PepperPluginInstanceImpl*>(
+      PepperPluginInstance::Get(pp_instance()));

[bbudge, 2016/06/14 17:19:13]

null check for instance here.

[Zhiqiang Zhang (Slow), 2016/06/14 17:28:56]

Done.

+  RenderFrameImpl* render_frame = instance->render_frame();
+  if (render_frame)
+    render_frame->PepperStartsPlayback(instance, this);
+
   SetStartPlaybackState();
   audio_->StartPlayback();
 }
 
+void PPB_Audio_Impl::SetVolume(double volume) {

[bbudge, 2016/06/14 17:19:13]

Check that audio_ isn't null? See StopPlayback.

[Zhiqiang Zhang (Slow), 2016/06/14 17:28:56]

Done.

+  audio_->SetVolume(volume);
+}
 }  // namespace content