Remove the flags to RenderViewHost::EnablePreferredSizeMode since it's not used after http://crbu...

chrome/browser/tab_contents/tab_contents_view_mac.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 <Carbon/Carbon.h>
 
 #include "chrome/browser/tab_contents/tab_contents_view_mac.h"
 
 #include <string>
 
@@ skipping 171 matching lines @@
   [cocoa_view_ startDragWithDropData:drop_data
                    dragOperationMask:mask
                                image:gfx::SkBitmapToNSImage(image)
                               offset:offset];
 }
 
 void TabContentsViewMac::RenderViewCreated(RenderViewHost* host) {
   // We want updates whenever the intrinsic width of the webpage changes.
   // Put the RenderView into that mode. The preferred width is used for example
   // when the "zoom" button in the browser window is clicked.
-  host->EnablePreferredSizeMode(kPreferredSizeWidth);
+  host->EnablePreferredSizeMode();
 }
 
 void TabContentsViewMac::SetPageTitle(const string16& title) {
   // Meaningless on the Mac; widgets don't have a "title" attribute
 }
 
 void TabContentsViewMac::OnTabCrashed(base::TerminationStatus /* status */,
                                       int /* error_code */) {
 }
 
@@ skipping 403 matching lines @@
       [[[notification userInfo] objectForKey:kSelectionDirection]
         unsignedIntegerValue];
   if (direction == NSDirectSelection)
     return;
 
   [self tabContents]->
       FocusThroughTabTraversal(direction == NSSelectingPrevious);
 }
 
 @end