Fix tab_view.mm build break in 472 branch.

chrome/browser/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/cocoa/tab_view.h"
 
 #include "base/logging.h"
 #import "base/mac_util.h"
 #include "base/nsimage_cache_mac.h"
 #include "base/scoped_cftyperef.h"
@@ skipping 831 matching lines @@
       if ([child isKindOfClass:[NSButtonCell class]])
         [okChildren addObject:child];
     }
 
     return okChildren;
   }
 
   return [super accessibilityAttributeValue:attribute];
 }
 
-- (ViewID)viewID {
-  return VIEW_ID_TAB;
-}
-
 @end  // @implementation TabView
 
 @implementation TabView (TabControllerInterface)
 
 - (void)setController:(TabController*)controller {
   controller_ = controller;
 }
 
 @end  // @implementation TabView (TabControllerInterface)
 
@@ skipping 170 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)