Instant: Use only one hidden WebContents per profile.

chrome/browser/instant/instant_ntp.cc

-// Copyright 2013 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/instant/instant_ntp.h"
-
-#include "chrome/common/url_constants.h"
-#include "content/public/browser/navigation_entry.h"
-#include "content/public/browser/web_contents.h"
-
-InstantNTP::InstantNTP(InstantPage::Delegate* delegate,
-                       const std::string& instant_url)
-    : InstantPage(delegate),
-      loader_(ALLOW_THIS_IN_INITIALIZER_LIST(this)),
-      instant_url_(instant_url) {
-}
-
-InstantNTP::~InstantNTP() {
-}
-
-void InstantNTP::InitContents(Profile* profile,
-                              const content::WebContents* active_tab,
-                              const base::Closure& on_stale_callback) {
-  loader_.Init(GURL(instant_url_), profile, active_tab, on_stale_callback);
-  SetContents(loader_.contents());
-  loader_.Load();
-  contents()->GetController().GetPendingEntry()->SetVirtualURL(
-      GURL(chrome::kChromeUINewTabURL));
-}
-
-scoped_ptr<content::WebContents> InstantNTP::ReleaseContents() {
-  SetContents(NULL);
-  return loader_.ReleaseContents();
-}
-
-void InstantNTP::OnSwappedContents() {
-  SetContents(loader_.contents());
-  contents()->GetController().GetPendingEntry()->SetVirtualURL(
-      GURL(chrome::kChromeUINewTabURL));
-}
-
-void InstantNTP::OnFocus() {
-  NOTREACHED();
-}
-
-void InstantNTP::OnMouseDown() {
-  NOTREACHED();
-}
-
-void InstantNTP::OnMouseUp() {
-  NOTREACHED();
-}
-
-content::WebContents* InstantNTP::OpenURLFromTab(
-    content::WebContents* source,
-    const content::OpenURLParams& params) {
-  return NULL;
-}
-
-bool InstantNTP::ShouldProcessRenderViewCreated() {
-  return true;
-}
-
-bool InstantNTP::ShouldProcessRenderViewGone() {
-  return true;
-}