Fix focus rects for checkboxes and radio buttons:...

chrome/common/gfx/insets.h

 // Copyright (c) 2006-2008 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_GFX_INSETS_H__
 #define CHROME_COMMON_GFX_INSETS_H__
 
 namespace gfx {
 
 //
@@ skipping 31 matching lines @@
 
   bool operator==(const Insets& insets) const {
     return top_ == insets.top_ && left_ == insets.left_ &&
            bottom_ == insets.bottom_ && right_ == insets.right_;
   }
 
   bool operator!=(const Insets& insets) const {
     return !(*this == insets);
   }
 
+  Insets& operator+=(const Insets& insets) {
+    top_ += insets.top_;
+    left_ += insets.left_;
+    bottom_ += insets.bottom_;
+    right_ += insets.right_;
+    return *this;
+  }
+
  private:
   int top_;
   int left_;
   int bottom_;
   int right_;
 };
 
 } // namespace
 
 #endif // CHROME_COMMON_GFX_INSETS_H__