Implement Browser Actions extensions....

chrome/browser/extensions/extensions_service.h

Index: chrome/browser/extensions/extensions_service.h
===================================================================
--- chrome/browser/extensions/extensions_service.h	(revision 27027)
+++ chrome/browser/extensions/extensions_service.h	(working copy)
@@ -102,10 +102,14 @@
     return GetExtensionByIdInternal(id, true, false);
   }
 
-  // Retrieves a vector of all page actions, irrespective of which
-  // extension they belong to.
-  std::vector<PageAction*> GetPageActions() const;
+  // Retrieves a vector of all page actions, irrespective of which extension
+  // they belong to.
+  std::vector<ContextualAction*> GetPageActions() const;
 
+  // Retrieves a vector of all browser actions, irrespective of which extension
+  // they belong to.
+  std::vector<ContextualAction*> GetBrowserActions() const;
+
   // Install the extension file at |extension_path|.  Will install as an
   // update if an older version is already installed.
   // For fresh installs, this method also causes the extension to be
@@ -232,6 +236,11 @@
       DictionaryValue* manifest, const std::string& id,
       const FilePath& path, Extension::Location location);
 
+  // Retrieves a vector of all page actions or browser actions, irrespective of
+  // which extension they belong to.
+  std::vector<ContextualAction*> GetContextualActions(
+      ContextualAction::ContextualActionType action_type) const;
+
   // The profile this ExtensionsService is part of.
   Profile* profile_;