Create CoreTabHelper, move remaining core TCW functionality into it.

chrome/browser/ui/cocoa/hung_renderer_controller.mm

Index: chrome/browser/ui/cocoa/hung_renderer_controller.mm
diff --git a/chrome/browser/ui/cocoa/hung_renderer_controller.mm b/chrome/browser/ui/cocoa/hung_renderer_controller.mm
index 3e5e38e463e2a6ac7ecf4ed56a53cda598ff6331..41e616b801178c5176e3af253ef5700b7e6494ec 100644
--- a/chrome/browser/ui/cocoa/hung_renderer_controller.mm
+++ b/chrome/browser/ui/cocoa/hung_renderer_controller.mm
@@ -14,6 +14,7 @@
 #include "chrome/browser/ui/browser_list.h"
 #import "chrome/browser/ui/cocoa/multi_key_equivalent_button.h"
 #import "chrome/browser/ui/cocoa/tab_contents/favicon_util.h"
+#include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #include "chrome/common/logging_chrome.h"
 #include "content/browser/renderer_host/render_view_host.h"
@@ -173,7 +174,7 @@ class TabContentsObserverBridge : public TabContentsObserver {
         hungContents_->GetRenderProcessHost()) {
       string16 title = (*it)->tab_contents()->GetTitle();
       if (title.empty())
-        title = TabContentsWrapper::GetDefaultTitle();
+        title = CoreTabHelper::GetDefaultTitle();
       [titles addObject:base::SysUTF16ToNSString(title)];
       [favicons addObject:mac::FaviconForTabContents(*it)];
     }