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

chrome/browser/extensions/extension_host.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/extension_host.h"
 
 #include <list>
 
 #include "base/bind.h"
 #include "base/memory/singleton.h"
@@ skipping 27 matching lines @@
 #include "chrome/common/render_messages.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/native_web_keyboard_event.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/site_instance.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
+#include "content/public/browser/web_intents_dispatcher.h"
 #include "grit/browser_resources.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "ui/base/keycodes/keyboard_codes.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/layout.h"
 #include "ui/base/resource/resource_bundle.h"
 
 using WebKit::WebDragOperation;
 using WebKit::WebDragOperationsMask;
@@ skipping 353 matching lines @@
 void ExtensionHost::OnStartDownload(
     content::WebContents* source, content::DownloadItem* download) {
   // If |source| is in the context of a Browser, show the DownloadShelf on that
   // Browser.
   if (!view() || !view()->browser())
     return;
   static_cast<content::WebContentsDelegate*>(view()->browser())->
     OnStartDownload(source, download);
 }
 
+void ExtensionHost::WebIntentDispatch(
+    content::WebContents* web_contents,
+    content::WebIntentsDispatcher* intents_dispatcher) {
+#if !defined(OS_ANDROID)
+  scoped_ptr<content::WebIntentsDispatcher> dispatcher(intents_dispatcher);
+
+  Browser* browser = view() ? view()->browser()
+      : browser::FindBrowserWithWebContents(web_contents);
+
+  // For background scripts/pages, there will be no view(). In this case, we
+  // want to treat the intent as a browser-initiated one and deliver it into the
+  // current browser. It probably came from a context menu click or similar.
+  if (!browser)
+    browser = web_intents::GetBrowserForBackgroundWebIntentDelivery(profile());
+
+  if (browser) {
+    static_cast<WebContentsDelegate*>(browser)->
+        WebIntentDispatch(NULL, dispatcher.release());
+  }
+#endif
+}
+
 void ExtensionHost::WillRunJavaScriptDialog() {
   ExtensionProcessManager* pm =
       ExtensionSystem::Get(profile_)->process_manager();
   if (pm)
     pm->IncrementLazyKeepaliveCount(extension());
 }
 
 void ExtensionHost::DidCloseJavaScriptDialog() {
   ExtensionProcessManager* pm =
       ExtensionSystem::Get(profile_)->process_manager();
@@ skipping 166 matching lines @@
 }
 
 void ExtensionHost::RenderViewReady() {
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_EXTENSION_HOST_CREATED,
       content::Source<Profile>(profile_),
       content::Details<ExtensionHost>(this));
 }
 
 }  // namespace extensions