Remove VIEW_TYPE_WEB_CONTENTS and make default view type INVALID.

chrome/browser/extensions/api/web_navigation/web_navigation_api.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.
 
 // Implements the Chrome Extensions WebNavigation API.
 
 #include "chrome/browser/extensions/api/web_navigation/web_navigation_api.h"
 
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
 #include "base/string_number_conversions.h"
 #include "base/time.h"
 #include "base/values.h"
 #include "chrome/browser/extensions/api/web_navigation/web_navigation_api_constants.h"
 #include "chrome/browser/extensions/extension_event_router.h"
 #include "chrome/browser/extensions/extension_tab_util.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/tab_contents/retargeting_details.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/common/chrome_notification_types.h"
+#include "chrome/common/chrome_view_type.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/resource_request_details.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_view_host_delegate.h"
 #include "content/public/browser/web_contents.h"
 #include "net/base/net_errors.h"
 
@@ skipping 410 matching lines @@
 
 void WebNavigationEventRouter::Retargeting(const RetargetingDetails* details) {
   if (details->source_frame_id == 0)
     return;
   WebNavigationTabObserver* tab_observer =
       WebNavigationTabObserver::Get(details->source_web_contents);
   if (!tab_observer) {
     // If you hit this DCHECK(), please add reproduction steps to
     // http://crbug.com/109464.
     DCHECK(details->source_web_contents->GetViewType() !=
-           content::VIEW_TYPE_WEB_CONTENTS);
+           chrome::VIEW_TYPE_TAB_CONTENTS);
     return;
   }
   const FrameNavigationState& frame_navigation_state =
       tab_observer->frame_navigation_state();
 
   if (!frame_navigation_state.CanSendEvents(details->source_frame_id))
     return;
 
   // If the WebContents was created as a response to an IPC from a renderer
   // (and therefore doesn't yet have a wrapper), or if it isn't yet inserted
@@ skipping 339 matching lines @@
     frameDict->SetBoolean(
         keys::kErrorOccurredKey,
         navigation_state.GetErrorOccurredInFrame(*frame));
     resultList->Append(frameDict);
   }
   result_.reset(resultList);
   return true;
 }
 
 }  // namespace extensions