Refactor UI "badge" (page action) logic into a BadgeController interface.

chrome/browser/ui/tab_contents/tab_contents_wrapper.h

Index: chrome/browser/ui/tab_contents/tab_contents_wrapper.h
diff --git a/chrome/browser/ui/tab_contents/tab_contents_wrapper.h b/chrome/browser/ui/tab_contents/tab_contents_wrapper.h
index 3fc5e14ef66cd57737255cc285abaf671cf706b4..7bcbd5addc3fc9080a2a4188bf5371758815a94f 100644
--- a/chrome/browser/ui/tab_contents/tab_contents_wrapper.h
+++ b/chrome/browser/ui/tab_contents/tab_contents_wrapper.h
@@ -56,6 +56,7 @@ class SyncedTabDelegate;
 }
 
 namespace extensions {
+class PageBoxController;
 class WebNavigationTabObserver;
 }
 
@@ -132,6 +133,10 @@ class TabContentsWrapper : public content::WebContentsObserver {
 
   CoreTabHelper* core_tab_helper() { return core_tab_helper_.get(); }
 
+  extensions::PageBoxController* extensions_page_box_controller() {
+    return extensions_page_box_controller_.get();
+  }
+
   ExtensionTabHelper* extension_tab_helper() {
     return extension_tab_helper_.get();
   }
@@ -229,6 +234,7 @@ class TabContentsWrapper : public content::WebContentsObserver {
   scoped_ptr<ConstrainedWindowTabHelper> constrained_window_tab_helper_;
   scoped_ptr<CoreTabHelper> core_tab_helper_;
   scoped_ptr<ExtensionTabHelper> extension_tab_helper_;
+  scoped_ptr<extensions::PageBoxController> extensions_page_box_controller_;
   scoped_ptr<FaviconTabHelper> favicon_tab_helper_;
   scoped_ptr<FindTabHelper> find_tab_helper_;
   scoped_ptr<HistoryTabHelper> history_tab_helper_;