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

chrome/browser/tab_contents/background_contents.cc

Index: chrome/browser/tab_contents/background_contents.cc
===================================================================
--- chrome/browser/tab_contents/background_contents.cc	(revision 138369)
+++ chrome/browser/tab_contents/background_contents.cc	(working copy)
@@ -32,7 +32,8 @@
   // TODO(rafaelw): Implement correct session storage.
   web_contents_.reset(WebContents::Create(
       profile_, site_instance, routing_id, NULL, NULL));
-  web_contents_->SetViewType(chrome::VIEW_TYPE_BACKGROUND_CONTENTS);
+  chrome::SetViewType(
+      web_contents_.get(), chrome::VIEW_TYPE_BACKGROUND_CONTENTS);
   web_contents_->SetDelegate(this);
   content::WebContentsObserver::Observe(web_contents_.get());