[Web Intents] Add ability to dispatch intents from extension-caused code (i.e. context menus)

chrome/browser/extensions/extension_host.h

Index: chrome/browser/extensions/extension_host.h
diff --git a/chrome/browser/extensions/extension_host.h b/chrome/browser/extensions/extension_host.h
index f3c135220d9197df91586ef8b2e6f250d7e23c2b..430163001090add050c127368ceebbbda93aacc9 100644
--- a/chrome/browser/extensions/extension_host.h
+++ b/chrome/browser/extensions/extension_host.h
@@ -36,6 +36,7 @@ namespace content {
 class RenderProcessHost;
 class RenderWidgetHostView;
 class SiteInstance;
+class WebIntentsDispatcher;
 }
 
 namespace extensions {
@@ -164,6 +165,9 @@ class ExtensionHost : public content::WebContentsDelegate,
   virtual void CloseContents(content::WebContents* contents) OVERRIDE;
   virtual void OnStartDownload(content::WebContents* source,
                                content::DownloadItem* download) OVERRIDE;
+  virtual void WebIntentDispatch(
+      content::WebContents* web_contents,
+      content::WebIntentsDispatcher* intents_dispatcher) OVERRIDE;
 
   // content::NotificationObserver
   virtual void Observe(int type,