Add a new GetInstance() method for remaining files with singleton classes under chrome/browser.

chrome/browser/ui/cocoa/tab_view.mm

 // Copyright (c) 2010 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/tab_view.h"
 
 #include "base/logging.h"
 #import "base/mac_util.h"
 #include "base/mac/scoped_cftyperef.h"
 #include "base/nsimage_cache_mac.h"
@@ skipping 62 matching lines @@
 }
 
 - (void)awakeFromNib {
   [self setShowsDivider:NO];
 
   // It is desirable for us to remove the close button from the cocoa hierarchy,
   // so that VoiceOver does not encounter it.
   // TODO(dtseng): crbug.com/59978.
   // Retain in case we remove it from its superview.
   closeButtonRetainer_.reset([closeButton_ retain]);
-  if (Singleton<BrowserAccessibilityState>::get()->IsAccessibleBrowser()) {
+  if (BrowserAccessibilityState::GetInstance()->IsAccessibleBrowser()) {
     // The superview gives up ownership of the closeButton here.
     [closeButton_ removeFromSuperview];
   }
 }
 
 - (void)dealloc {
   // Cancel any delayed requests that may still be pending (drags or hover).
   [NSObject cancelPreviousPerformRequestsWithTarget:self];
   [super dealloc];
 }
@@ skipping 954 matching lines @@
        controlPoint1:NSMakePoint(topRight.x + bottomControlPointInset,
                                  topRight.y)
        controlPoint2:NSMakePoint(bottomRight.x - baseControlPointOutset,
                                  bottomRight.y)];
   [path lineToPoint:NSMakePoint(bottomRight.x + 1, bottomRight.y)];
   [path lineToPoint:NSMakePoint(bottomRight.x + 1, bottomRight.y - 2)];
   return path;
 }
 
 @end  // @implementation TabView(Private)