Give request-to-act badges a grey background, and increase spacing to make it fit.

chrome/browser/extensions/extension_action_util.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_UTIL_H_
+#define CHROME_BROWSER_EXTENSIONS_EXTENSION_ACTION_UTIL_H_
+
+// Utility functions for ExtensionActions that depend on code in the browser
+// component.
+
+class ExtensionAction;
+
+namespace gfx {
+class Canvas;
+class Rect;
+}
+namespace ui {
+class ThemeProvider;
+}
+
+namespace extensions {
+
+// Paint the background and border for |action| on |tab_id|.  |bounds| should
+// include the top and bottom of the location bar, and the middle column
+// exactly between two ExtensionActions, so both ExtensionActions can draw on
+// it.  This background is only drawn for script badges in the WANTS_ATTENTION
+// state, and consists of a dark grey, 1px border and a lighter grey
+// background with a slight vertical gradient.
+void PaintBackground(const ExtensionAction& action,
+                     int tab_id,
+                     gfx::Canvas* canvas,
+                     const gfx::Rect& bounds,
+                     const ui::ThemeProvider& theme);
+
+}  // namespace extensions
+
+#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_ACTION_UTIL_H_