Check media permissions through RenderFrameHostDelegate.

chrome/browser/ui/app_list/start_page_service.cc

Index: chrome/browser/ui/app_list/start_page_service.cc
diff --git a/chrome/browser/ui/app_list/start_page_service.cc b/chrome/browser/ui/app_list/start_page_service.cc
index 3615a6e85f82c10c9f1231c4372bc48696758c1d..8392be2c6e39507060265be475f024922a71e0a4 100644
--- a/chrome/browser/ui/app_list/start_page_service.cc
+++ b/chrome/browser/ui/app_list/start_page_service.cc
@@ -88,6 +88,14 @@ class StartPageService::StartPageWebContentsDelegate
       NOTREACHED() << "Media stream not allowed for WebUI";
   }
 
+  virtual bool CheckMediaAccessPermission(
+      content::WebContents* web_contents,
+      const GURL& security_origin,
+      content::MediaStreamType type) OVERRIDE {
+    return MediaCaptureDevicesDispatcher::GetInstance()
+        ->CheckMediaAccessPermission(web_contents, security_origin, type);
+  }
+
  private:
   DISALLOW_COPY_AND_ASSIGN(StartPageWebContentsDelegate);
 };