Get rid of the RenderViewType concept in content, since it was only used by Chrome. Store the enum…

chrome/browser/geolocation/chrome_geolocation_permission_context.cc

Index: chrome/browser/geolocation/chrome_geolocation_permission_context.cc
===================================================================
--- chrome/browser/geolocation/chrome_geolocation_permission_context.cc	(revision 138369)
+++ chrome/browser/geolocation/chrome_geolocation_permission_context.cc	(working copy)
@@ -624,8 +624,7 @@
 
   WebContents* web_contents =
       tab_util::GetWebContentsByID(render_process_id, render_view_id);
-  if (!web_contents || web_contents->GetViewType() !=
-          chrome::VIEW_TYPE_TAB_CONTENTS) {
+  if (chrome::GetViewType(web_contents) != chrome::VIEW_TYPE_TAB_CONTENTS) {
     // The tab may have gone away, or the request may not be from a tab at all.
     // TODO(mpcomplete): the request could be from a background page or
     // extension popup (tab_contents will have a different ViewType). But why do