Instant: Use only one hidden WebContents per profile.

chrome/browser/ui/cocoa/browser_window_cocoa.mm

 // Copyright (c) 2012 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/cocoa/browser_window_cocoa.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/mac/mac_util.h"
@@ skipping 401 matching lines @@
 }
 
 void BrowserWindowCocoa::RotatePaneFocus(bool forwards) {
   // Not needed on the Mac.
 }
 
 void BrowserWindowCocoa::FocusBookmarksToolbar() {
   // Not needed on the Mac.
 }
 
-
 bool BrowserWindowCocoa::IsBookmarkBarVisible() const {
   return browser_->profile()->GetPrefs()->GetBoolean(prefs::kShowBookmarkBar);
 }
 
 bool BrowserWindowCocoa::IsBookmarkBarAnimating() const {
   return [controller_ isBookmarkBarAnimating];
 }
 
 bool BrowserWindowCocoa::IsTabStripEditable() const {
   return ![controller_ isDragSessionActive];
@@ skipping 223 matching lines @@
   if (!web_contents)
     return NULL;
   extensions::TabHelper* tab_helper =
       extensions::TabHelper::FromWebContents(web_contents);
   return tab_helper ? tab_helper->active_tab_permission_granter() : NULL;
 }
 
 void BrowserWindowCocoa::ModeChanged(
     const chrome::search::Mode& old_mode,
     const chrome::search::Mode& new_mode) {
-  [controller_ updateBookmarkBarStateForInstantPreview];
+  [controller_ updateBookmarkBarStateForInstantOverlay];
 }
 
 void BrowserWindowCocoa::DestroyBrowser() {
   [controller_ destroyBrowser];
 
   // at this point the controller is dead (autoreleased), so
   // make sure we don't try to reference it any more.
 }
 
 NSWindow* BrowserWindowCocoa::window() const {
@@ skipping 30 matching lines @@
   PasswordGenerationBubbleController* controller =
       [[PasswordGenerationBubbleController alloc]
         initWithWindow:browser_->window()->GetNativeWindow()
             anchoredAt:point
         renderViewHost:web_contents->GetRenderViewHost()
         passwordManager:PasswordManager::FromWebContents(web_contents)
         usingGenerator:password_generator
                forForm:form];
   [controller showWindow:nil];
 }