Add audio signal to the ResourceScheduler.

content/browser/renderer_host/render_view_host_impl.cc

Index: content/browser/renderer_host/render_view_host_impl.cc
diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index 6e15855686c45078081e15fff66def1533d51b48..7c673463efcc0cc927ce4e69cdaeb09c61338932 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -166,7 +166,8 @@ RenderViewHostImpl::RenderViewHostImpl(
     int routing_id,
     int main_frame_routing_id,
     bool swapped_out,
-    bool hidden)
+    bool hidden,
+    bool setup_for_testing)
     : RenderWidgetHostImpl(widget_delegate,
                            instance->GetProcess(),
                            routing_id,
@@ -195,13 +196,24 @@ RenderViewHostImpl::RenderViewHostImpl(
   GetProcess()->EnableSendQueue();
 
   if (ResourceDispatcherHostImpl::Get()) {
+    bool has_active_audio = false;
+    if (!setup_for_testing) {
+      scoped_refptr<AudioRendererHost> arh =
+          static_cast<RenderProcessHostImpl*>(GetProcess())
+              ->audio_renderer_host();
+      if (arh.get())
+        has_active_audio = arh->RenderViewHasActiveAudio(GetRoutingID());
+    }
     BrowserThread::PostTask(
-        BrowserThread::IO, FROM_HERE,
+        BrowserThread::IO,
+        FROM_HERE,
         base::Bind(&ResourceDispatcherHostImpl::OnRenderViewHostCreated,
                    base::Unretained(ResourceDispatcherHostImpl::Get()),
-                   GetProcess()->GetID(), GetRoutingID(), !is_hidden()));
+                   GetProcess()->GetID(),
+                   GetRoutingID(),
+                   !is_hidden(),
+                   has_active_audio));
   }
-
 #if defined(ENABLE_BROWSER_CDMS)
   media_web_contents_observer_.reset(new MediaWebContentsObserver(this));
 #endif