Generalize ExtensionIconSet to store icon paths for custom size sets

chrome/common/extensions/extension_constants.cc

 // 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.
 
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/extension_manifest_constants.h"
 
 #include <vector>
 
 #include "base/command_line.h"
@@ skipping 127 matching lines @@
 const char kAppStateRunning[] = "running";
 const char kAppStateCannotRun[] = "cannot_run";
 const char kAppStateReadyToRun[] = "ready_to_run";
 
 const char kMediaFileSystemPathPart[] = "_";
 
 const char kAppNotificationsIncognitoError[] =
     "This API is not accessible by 'split' mode "
     "extensions in incognito windows.";
 
+const int kExtensionIconSizes[] = {
+  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_BITTY  // 16
+};
+
+const size_t kNumExtensionIconSizes =
+    arraysize(kExtensionIconSizes);
+
 }  // namespace extension_misc