Change browser/page action default icon defined in manifest to support hidpi.

chrome/common/extensions/extension_constants.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_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_
 #define CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 237 matching lines @@
 
   // NOTE: If you change this list, you should also change kExtensionIconSizes
   // in cc file.
   enum ExtensionIcons {
     EXTENSION_ICON_GIGANTOR = 512,
     EXTENSION_ICON_EXTRA_LARGE = 256,
     EXTENSION_ICON_LARGE = 128,
     EXTENSION_ICON_MEDIUM = 48,
     EXTENSION_ICON_SMALL = 32,
     EXTENSION_ICON_SMALLISH = 24,
+    EXTENSION_ICON_ACTION = 19,
     EXTENSION_ICON_BITTY = 16,
     EXTENSION_ICON_INVALID = 0,
   };
 
   // List of sizes for extension icons that can be defined in the manifest.
   extern const int kExtensionIconSizes[];
   extern const size_t kNumExtensionIconSizes;
 
+  // List of sizes for extension icons that can be defined in the manifest.
+  extern const int kExtensionActionIconSizes[];
+  extern const size_t kNumExtensionActionIconSizes;
+
+  // List of sizes for extension icons that can be defined in the manifest.
+  extern const int kScriptBadgeIconSizes[];
+  extern const size_t kNumScriptBadgeIconSizes;
+
 }  // extension_misc
 
 #endif  // CHROME_COMMON_EXTENSIONS_EXTENSION_CONSTANTS_H_