Make WebUI objects not derive from WebUI. WebUI objects own the controller. This is the ownership...

chrome/browser/ui/toolbar/toolbar_model.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/toolbar/toolbar_model.h"
 
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/autocomplete/autocomplete.h"
 #include "chrome/browser/autocomplete/autocomplete_edit.h"
 #include "chrome/browser/prefs/pref_service.h"
@@ skipping 68 matching lines @@
   NavigationEntry* entry = controller ? controller->GetVisibleEntry() : NULL;
   if (entry) {
     if (entry->IsViewSourceMode() ||
         entry->GetPageType() == content::PAGE_TYPE_INTERSTITIAL) {
       return true;
     }
   }
 
   WebContents* web_contents = browser_->GetSelectedWebContents();
   if (web_contents && web_contents->GetWebUIForCurrentState())
-    return !web_contents->GetWebUIForCurrentState()->should_hide_url();
+    return !web_contents->GetWebUIForCurrentState()->ShouldHideURL();
 
   if (entry && entry->GetURL().SchemeIs(chrome::kExtensionScheme))
     return false;
 
   return true;
 }
 
 ToolbarModel::SecurityLevel ToolbarModel::GetSecurityLevel() const {
   if (input_in_progress_)  // When editing, assume no security style.
     return NONE;
@@ skipping 70 matching lines @@
       UTF8ToUTF16(cert.subject().country_name));
 }
 
 NavigationController* ToolbarModel::GetNavigationController() const {
   // This |current_tab| can be NULL during the initialization of the
   // toolbar during window creation (i.e. before any tabs have been added
   // to the window).
   WebContents* current_tab = browser_->GetSelectedWebContents();
   return current_tab ? &current_tab->GetController() : NULL;
 }