Remove VIEW_TYPE_WEB_CONTENTS and make default view type INVALID.

chrome/browser/extensions/api/web_navigation/web_navigation_api.cc

Index: chrome/browser/extensions/api/web_navigation/web_navigation_api.cc
diff --git a/chrome/browser/extensions/api/web_navigation/web_navigation_api.cc b/chrome/browser/extensions/api/web_navigation/web_navigation_api.cc
index 69b41352747d41e7a4438bb7c47d39aaa1b11e4c..e7978191a2ee1d16e7b8d7f7a9a41df5d5be22d3 100644
--- a/chrome/browser/extensions/api/web_navigation/web_navigation_api.cc
+++ b/chrome/browser/extensions/api/web_navigation/web_navigation_api.cc
@@ -18,6 +18,7 @@
 #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"
@@ -448,7 +449,7 @@ void WebNavigationEventRouter::Retargeting(const RetargetingDetails* details) {
     // 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 =