Clean up TCW, make it solely a hub for 1:1 observer/helper objects.

chrome/browser/ui/tab_contents/tab_contents_wrapper.cc

 // 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.
 
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "chrome/browser/autocomplete_history_manager.h"
 #include "chrome/browser/autofill/autofill_external_delegate.h"
@@ skipping 27 matching lines @@
 #include "chrome/browser/ui/intents/web_intent_picker_factory_impl.h"
 #include "chrome/browser/ui/intents/web_intent_picker_controller.h"
 #include "chrome/browser/ui/pdf/pdf_tab_observer.h"
 #include "chrome/browser/ui/prefs/prefs_tab_helper.h"
 #include "chrome/browser/ui/sad_tab_observer.h"
 #include "chrome/browser/ui/search_engines/search_engine_tab_helper.h"
 #include "chrome/browser/ui/snapshot_tab_helper.h"
 #include "chrome/browser/ui/sync/tab_contents_wrapper_synced_tab_delegate.h"
 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
 #include "chrome/common/chrome_switches.h"
+#include "content/browser/tab_contents/tab_contents.h"
 
 namespace {
 
 static base::LazyInstance<base::PropertyAccessor<TabContentsWrapper*> >
     g_tab_contents_wrapper_property_accessor = LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace
 
 ////////////////////////////////////////////////////////////////////////////////
 // TabContentsWrapper, public:
@@ skipping 118 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // TabContentsObserver overrides
 
 void TabContentsWrapper::TabContentsDestroyed(TabContents* tab) {
   // Destruction of the TabContents should only be done by us from our
   // destructor. Otherwise it's very likely we (or one of the helpers we own)
   // will attempt to access the TabContents and we'll crash.
   DCHECK(in_destructor_);
 }