Makes the maximize/restore button handling

ui/views/controls/button/image_button.cc

Index: ui/views/controls/button/image_button.cc
diff --git a/ui/views/controls/button/image_button.cc b/ui/views/controls/button/image_button.cc
index 4bf214ab02123763720f79d1189a818e66465d34..129ca260119f87075bfbc168eda6e653234141bb 100644
--- a/ui/views/controls/button/image_button.cc
+++ b/ui/views/controls/button/image_button.cc
@@ -31,8 +31,8 @@ ImageButton::ImageButton(ButtonListener* listener)
 ImageButton::~ImageButton() {
 }
 
-void ImageButton::SetImage(ButtonState aState, const SkBitmap* anImage) {
-  images_[aState] = anImage ? *anImage : SkBitmap();
+void ImageButton::SetImage(ButtonState state, const SkBitmap* image) {
+  images_[state] = image ? *image : SkBitmap();
   PreferredSizeChanged();
 }