Move extensions manifest IconsHandler to //extensions

chrome/browser/extensions/extension_action.h

 // Copyright (c) 2012 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_BROWSER_EXTENSIONS_EXTENSION_ACTION_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_ACTION_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 24 matching lines @@
 
 // ExtensionAction encapsulates the state of a browser action or page action.
 // Instances can have both global and per-tab state. If a property does not have
 // a per-tab value, the global value is used instead.
 class ExtensionAction {
  public:
   // Use this ID to indicate the default state for properties that take a tab_id
   // parameter.
   static const int kDefaultTabId;
 
+  // Max size (both dimensions) for page actions.
+  static const int kPageActionIconMaxSize;
+
   ExtensionAction(const std::string& extension_id,
                   extensions::ActionInfo::Type action_type,
                   const extensions::ActionInfo& manifest_data);
   ~ExtensionAction();
 
   // Gets a copy of this, ownership passed to caller.
   // It doesn't make sense to copy of an ExtensionAction except in tests.
   scoped_ptr<ExtensionAction> CopyForTest() const;
 
   // Given the extension action type, returns the size the extension action icon
@@ skipping 212 matching lines @@
 };
 
 template<>
 struct ExtensionAction::ValueTraits<int> {
   static int CreateEmpty() {
     return -1;
   }
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_ACTION_H_