Ability to block <audio> and <video> media.

public/web/WebPermissionClient.h

Index: public/web/WebPermissionClient.h
diff --git a/public/web/WebPermissionClient.h b/public/web/WebPermissionClient.h
index 2b7d5727faf9b6952fcd79939b9471b12eefc11f..cfaed248d334d8e4676aa5574c651460d9ced48b 100644
--- a/public/web/WebPermissionClient.h
+++ b/public/web/WebPermissionClient.h
@@ -53,6 +53,9 @@ public:
     // Controls whether access to Indexed DB are allowed for this frame.
     virtual bool allowIndexedDB(WebFrame*, const WebString& name, const WebSecurityOrigin&) { return true; }
 
+    // Controls whether HTML5 media elements (<audio>, <video>) are allowed for this frame.
+    virtual bool allowMedia(WebFrame* frame, bool enabledPerSettings, const WebURL& videoURL) { return enabledPerSettings; }
+
     // Controls whether plugins are allowed for this frame.
     virtual bool allowPlugins(WebFrame*, bool enabledPerSettings) { return enabledPerSettings; }