Mac: Fix missing focus rings on toolbar, profile, and tab buttons

chrome/browser/ui/cocoa/toolbar/toolbar_button_cocoa.mm

 // Copyright (c) 2011 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.
 
 #import "chrome/browser/ui/cocoa/toolbar/toolbar_button_cocoa.h"
 
 @implementation ToolbarButton
 
 @synthesize handleMiddleClick = handleMiddleClick_;
 
@@ skipping 30 matching lines @@
   if (isInside)
     [self sendAction:[self action] to:[self target]];
 }
 
 - (BOOL)shouldHandleEvent:(NSEvent*)theEvent {
   // |buttonNumber| is the mouse button whose action triggered theEvent.
   // 2 corresponds to the middle mouse button.
   return handleMiddleClick_ && [theEvent buttonNumber] == 2;
 }
 
+- (void)drawFocusRingMask {
+  // Match the hover image's bezel.
+  [[NSBezierPath bezierPathWithRoundedRect:NSInsetRect([self bounds], 2, 2)
+                                   xRadius:2
+                                   yRadius:2] fill];
+}
+
 @end