Add abstractions that let embedders drive tests of WebContents.

content/browser/intents/internal_web_intents_dispatcher_unittest.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 "base/bind.h"
 #include "base/utf_string_conversions.h"
 #include "content/browser/intents/intent_injector.h"
 #include "content/browser/intents/internal_web_intents_dispatcher.h"
 #include "content/browser/renderer_host/test_render_view_host.h"
 #include "content/browser/tab_contents/test_tab_contents.h"
@@ skipping 30 matching lines @@
   webkit_glue::WebIntentData intent(ASCIIToUTF16("action"),
                                     ASCIIToUTF16("type"),
                                     ASCIIToUTF16("unserialized_data"));
   InternalWebIntentsDispatcher* dispatcher = new InternalWebIntentsDispatcher(
       intent, base::Bind(&InternalWebIntentsDispatcherTest::NotifyReply,
                          base::Unretained(this)));
   dispatcher->RegisterReplyNotification(
       base::Bind(&InternalWebIntentsDispatcherTest::ReplySent,
                  base::Unretained(this)));
 
-  dispatcher->DispatchIntent(contents());
+  dispatcher->DispatchIntent(web_contents());
 
   dispatcher->SendReplyMessage(webkit_glue::WEB_INTENT_REPLY_SUCCESS,
                               ASCIIToUTF16("success"));
 
   EXPECT_EQ(ASCIIToUTF16("success"), notified_data_);
   EXPECT_EQ(1, replied_);
   EXPECT_EQ(webkit_glue::WEB_INTENT_REPLY_SUCCESS, notified_reply_type_);
 }