Move page action manifest parsing out of Extension; the first multi-key manifest handler.

chrome/common/extensions/api/extension_action/page_action_handler.h

-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_COMMON_EXTENSIONS_API_EXTENSION_ACTION_BROWSER_ACTION_HANDLER_H_
-#define CHROME_COMMON_EXTENSIONS_API_EXTENSION_ACTION_BROWSER_ACTION_HANDLER_H_
+#ifndef CHROME_COMMON_EXTENSIONS_API_EXTENSION_ACTION_PAGE_ACTION_HANDLER_H_
+#define CHROME_COMMON_EXTENSIONS_API_EXTENSION_ACTION_PAGE_ACTION_HANDLER_H_
 
 #include <string>
 
 #include "chrome/common/extensions/api/extension_action/action_info.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/extensions/manifest_handler.h"
 
 namespace extensions {
 
-// Parses the "browser_action" manifest key.
-class BrowserActionHandler : public ManifestHandler {
+// Parses the "page_action" manifest key.
+class PageActionHandler : public ManifestHandler {
  public:
-  BrowserActionHandler();
-  virtual ~BrowserActionHandler();
+  PageActionHandler();
+  virtual ~PageActionHandler();
 
   virtual bool Parse(Extension* extension, string16* error) OVERRIDE;
 };
 
 }  // namespace extensions
 
-#endif  // CHROME_COMMON_EXTENSIONS_API_EXTENSION_ACTION_BROWSER_ACTION_HANDLER_H_
+#endif  // CHROME_COMMON_EXTENSIONS_API_EXTENSION_ACTION_PAGE_ACTION_HANDLER_H_