static AwContentsClientBridgeBase* FromWebContents(
content::WebContents* web_contents);
static AwContentsClientBridgeBase* FromID(int render_process_id,
static AwContentsClientBridgeBase* FromWebContents(
content::WebContents* web_contents);
static AwContentsClientBridgeBase* FromID(int render_process_id,