Bunch of match preview tweaks:

chrome/browser/tab_contents/tab_contents_delegate.cc

 // 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.
 
 #include "chrome/browser/tab_contents/tab_contents_delegate.h"
 
 #include "gfx/rect.h"
 
 void TabContentsDelegate::DetachContents(TabContents* source) {
 }
@@ skipping 147 matching lines @@
 bool TabContentsDelegate::ShouldEnablePreferredSizeNotifications() {
   return false;
 }
 
 void TabContentsDelegate::UpdatePreferredSize(const gfx::Size& pref_size) {
 }
 
 void TabContentsDelegate::ContentTypeChanged(TabContents* source) {
 }
 
-void TabContentsDelegate::CommitMatchPreview(TabContents* source) {
-}
-
 void TabContentsDelegate::OnSetSuggestResult(int32 page_id,
                                              const std::string& result) {
 }
 
 TabContentsDelegate::~TabContentsDelegate() {
 }