Improves first run dialog performance on Win8

chrome/browser/ui/webui/set_as_default_browser_ui.cc

Index: chrome/browser/ui/webui/set_as_default_browser_ui.cc
diff --git a/chrome/browser/ui/webui/set_as_default_browser_ui.cc b/chrome/browser/ui/webui/set_as_default_browser_ui.cc
deleted file mode 100644
index a9a6a9e2c79bc0e7310a1616e930e29c2dee3bc0..0000000000000000000000000000000000000000
--- a/chrome/browser/ui/webui/set_as_default_browser_ui.cc
+++ /dev/null
@@ -1,354 +0,0 @@
-// 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/webui/set_as_default_browser_ui.h"
-
-#include <string>
-#include <vector>
-
-#include "base/bind.h"
-#include "base/bind_helpers.h"
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "base/metrics/histogram.h"
-#include "chrome/browser/profiles/profile.h"
-#include "chrome/browser/shell_integration.h"
-#include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/browser_dialogs.h"
-#include "chrome/browser/ui/browser_finder.h"
-#include "chrome/browser/ui/browser_list.h"
-#include "chrome/browser/ui/browser_list_observer.h"
-#include "chrome/browser/ui/browser_window.h"
-#include "chrome/browser/ui/chrome_pages.h"
-#include "chrome/browser/ui/singleton_tabs.h"
-#include "chrome/browser/ui/startup/default_browser_prompt.h"
-#include "chrome/browser/ui/sync/sync_promo_ui.h"
-#include "chrome/browser/ui/tabs/tab_strip_model.h"
-#include "chrome/common/pref_names.h"
-#include "chrome/common/url_constants.h"
-#include "chrome/grit/chromium_strings.h"
-#include "chrome/grit/generated_resources.h"
-#include "chrome/grit/locale_settings.h"
-#include "chrome/installer/util/install_util.h"
-#include "components/prefs/pref_service.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/web_contents.h"
-#include "content/public/browser/web_contents_delegate.h"
-#include "content/public/browser/web_ui.h"
-#include "content/public/browser/web_ui_data_source.h"
-#include "content/public/browser/web_ui_message_handler.h"
-#include "grit/browser_resources.h"
-#include "ui/base/l10n/l10n_font_util.h"
-#include "ui/base/l10n/l10n_util.h"
-#include "ui/gfx/font.h"
-#include "ui/views/widget/widget.h"
-#include "ui/web_dialogs/web_dialog_delegate.h"
-
-using content::BrowserThread;
-using content::WebContents;
-using content::WebUIMessageHandler;
-
-namespace {
-
-const char kSetAsDefaultBrowserHistogram[] = "DefaultBrowser.InteractionResult";
-
-// The enum permits registering in UMA the three possible outcomes (do not
-// reorder these).
-// ACCEPTED: user pressed Next and made Chrome default.
-// DECLINED: user simply closed the dialog without making Chrome default.
-// REGRETTED: user pressed Next but then elected a different default browser.
-enum MakeChromeDefaultResult {
-  MAKE_CHROME_DEFAULT_ACCEPTED = 0,
-  MAKE_CHROME_DEFAULT_DECLINED = 1,
-  MAKE_CHROME_DEFAULT_REGRETTED = 2,
-  // MAKE_CHROME_DEFAULT_ACCEPTED_IMMERSE = 3,  // Deprecated.
-  MAKE_CHROME_DEFAULT_MAX
-};
-
-content::WebUIDataSource* CreateSetAsDefaultBrowserUIHTMLSource() {
-  content::WebUIDataSource* data_source = content::WebUIDataSource::Create(
-      chrome::kChromeUIMetroFlowHost);
-  data_source->AddLocalizedString("page-title", IDS_METRO_FLOW_TAB_TITLE);
-  data_source->AddLocalizedString("flowTitle", IDS_METRO_FLOW_TITLE_SHORT);
-  data_source->AddLocalizedString("flowDescription",
-                                  IDS_METRO_FLOW_DESCRIPTION);
-  data_source->AddLocalizedString("flowNext",
-                                  IDS_METRO_FLOW_SET_DEFAULT);
-  data_source->AddLocalizedString("chromeLogoString",
-                                  IDS_METRO_FLOW_LOGO_STRING_ALT);
-  data_source->SetJsonPath("strings.js");
-  data_source->AddResourcePath("set_as_default_browser.js",
-                               IDR_SET_AS_DEFAULT_BROWSER_JS);
-  data_source->SetDefaultResource(IDR_SET_AS_DEFAULT_BROWSER_HTML);
-  return data_source;
-}
-
-// A simple class serving as a delegate for passing down the result of the
-// interaction.
-class ResponseDelegate {
- public:
-  virtual void SetDialogInteractionResult(MakeChromeDefaultResult result) = 0;
-
- protected:
-  virtual ~ResponseDelegate() { }
-};
-
-// Event handler for SetAsDefaultBrowserUI. Capable of setting Chrome as the
-// default browser on button click, closing itself and triggering Chrome
-// restart.
-class SetAsDefaultBrowserHandler : public WebUIMessageHandler {
- public:
-  explicit SetAsDefaultBrowserHandler(
-      const base::WeakPtr<ResponseDelegate>& response_delegate);
-
-  // WebUIMessageHandler implementation.
-  void RegisterMessages() override;
-
- private:
-  // Handler for the 'Next' (or 'make Chrome the Metro browser') button.
-  void HandleLaunchSetDefaultBrowserFlow(const base::ListValue* args);
-
-  // Close this web ui.
-  void ConcludeInteraction(MakeChromeDefaultResult interaction_result);
-
-  void OnDefaultBrowserWorkerFinished(
-      shell_integration::DefaultWebClientState state);
-
-  // The worker pointer is reference counted. While it is running, the
-  // message loops of the FILE and UI thread will hold references to it
-  // and it will be automatically freed once all its tasks have finished.
-  scoped_refptr<shell_integration::DefaultBrowserWorker>
-      default_browser_worker_;
-  base::WeakPtr<ResponseDelegate> response_delegate_;
-
-  // Used to invalidate the DefaultBrowserWorker callback.
-  base::WeakPtrFactory<SetAsDefaultBrowserHandler> weak_ptr_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(SetAsDefaultBrowserHandler);
-};
-
-SetAsDefaultBrowserHandler::SetAsDefaultBrowserHandler(
-    const base::WeakPtr<ResponseDelegate>& response_delegate)
-    : response_delegate_(response_delegate), weak_ptr_factory_(this) {
-  default_browser_worker_ = new shell_integration::DefaultBrowserWorker(
-      base::Bind(&SetAsDefaultBrowserHandler::OnDefaultBrowserWorkerFinished,
-                 weak_ptr_factory_.GetWeakPtr()));
-}
-
-void SetAsDefaultBrowserHandler::RegisterMessages() {
-  web_ui()->RegisterMessageCallback(
-      "SetAsDefaultBrowser:LaunchSetDefaultBrowserFlow",
-      base::Bind(&SetAsDefaultBrowserHandler::HandleLaunchSetDefaultBrowserFlow,
-                 base::Unretained(this)));
-}
-
-void SetAsDefaultBrowserHandler::HandleLaunchSetDefaultBrowserFlow(
-    const base::ListValue* args) {
-  default_browser_worker_->StartSetAsDefault();
-}
-
-void SetAsDefaultBrowserHandler::ConcludeInteraction(
-    MakeChromeDefaultResult interaction_result) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-
-  if (response_delegate_)
-    response_delegate_->SetDialogInteractionResult(interaction_result);
-
-  WebContents* contents = web_ui()->GetWebContents();
-
-  if (contents) {
-    content::WebContentsDelegate* delegate = contents->GetDelegate();
-    if (delegate)
-      delegate->CloseContents(contents);
-  }
-}
-
-void SetAsDefaultBrowserHandler::OnDefaultBrowserWorkerFinished(
-    shell_integration::DefaultWebClientState state) {
-  // The callback is expected to be invoked once the procedure has completed.
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  if (state == shell_integration::NOT_DEFAULT) {
-    // The operation concluded, but Chrome is still not the default. This
-    // suggests the user has decided not to make Chrome the default.
-    ConcludeInteraction(MAKE_CHROME_DEFAULT_REGRETTED);
-  } else if (state == shell_integration::IS_DEFAULT) {
-    ConcludeInteraction(MAKE_CHROME_DEFAULT_ACCEPTED);
-  }
-
-  // Otherwise, keep the dialog open since the user probably didn't make a
-  // choice.
-}
-
-// A web dialog delegate implementation for when 'Make Chrome Metro' UI
-// is displayed on a dialog.
-class SetAsDefaultBrowserDialogImpl : public ui::WebDialogDelegate,
-                                      public ResponseDelegate,
-                                      public chrome::BrowserListObserver {
- public:
-  SetAsDefaultBrowserDialogImpl(Profile* profile, Browser* browser);
-  ~SetAsDefaultBrowserDialogImpl() override;
-  // Show a modal web dialog with kChromeUIMetroFlowURL page.
-  void ShowDialog();
-
- protected:
-  // Overridden from WebDialogDelegate:
-  ui::ModalType GetDialogModalType() const override;
-  base::string16 GetDialogTitle() const override;
-  GURL GetDialogContentURL() const override;
-  void GetWebUIMessageHandlers(
-      std::vector<WebUIMessageHandler*>* handlers) const override;
-  void GetDialogSize(gfx::Size* size) const override;
-  std::string GetDialogArgs() const override;
-  void OnDialogClosed(const std::string& json_retval) override;
-  void OnCloseContents(WebContents* source, bool* out_close_dialog) override;
-  bool ShouldShowDialogTitle() const override;
-  bool HandleContextMenu(const content::ContextMenuParams& params) override;
-
-  // Overridden from ResponseDelegate:
-  void SetDialogInteractionResult(MakeChromeDefaultResult result) override;
-
-  // Overridden from BrowserListObserver:
-  void OnBrowserRemoved(Browser* browser) override;
-
- private:
-  Profile* profile_;
-  Browser* browser_;
-  mutable bool owns_handler_;
-  base::WeakPtrFactory<ResponseDelegate> response_delegate_ptr_factory_;
-  SetAsDefaultBrowserHandler* handler_;
-  MakeChromeDefaultResult dialog_interaction_result_;
-
-  DISALLOW_COPY_AND_ASSIGN(SetAsDefaultBrowserDialogImpl);
-};
-
-SetAsDefaultBrowserDialogImpl::SetAsDefaultBrowserDialogImpl(Profile* profile,
-                                                             Browser* browser)
-    : profile_(profile),
-      browser_(browser),
-      owns_handler_(true),
-      response_delegate_ptr_factory_(this),
-      handler_(new SetAsDefaultBrowserHandler(
-          response_delegate_ptr_factory_.GetWeakPtr())),
-      dialog_interaction_result_(MAKE_CHROME_DEFAULT_DECLINED) {
-  BrowserList::AddObserver(this);
-}
-
-SetAsDefaultBrowserDialogImpl::~SetAsDefaultBrowserDialogImpl() {
-  if (browser_)
-    BrowserList::RemoveObserver(this);
-  if (owns_handler_)
-    delete handler_;
-}
-
-void SetAsDefaultBrowserDialogImpl::ShowDialog() {
-  // Use a NULL parent window to make sure that the dialog will have an item
-  // in the Windows task bar. The code below will make it highlight if the
-  // dialog is not in the foreground.
-  gfx::NativeWindow native_window = chrome::ShowWebDialog(NULL, profile_, this);
-  views::Widget* widget = views::Widget::GetWidgetForNativeWindow(
-      native_window);
-  widget->FlashFrame(true);
-}
-
-ui::ModalType SetAsDefaultBrowserDialogImpl::GetDialogModalType() const {
-  return ui::MODAL_TYPE_SYSTEM;
-}
-
-base::string16 SetAsDefaultBrowserDialogImpl::GetDialogTitle() const {
-  return l10n_util::GetStringUTF16(IDS_METRO_FLOW_TAB_TITLE);
-}
-
-GURL SetAsDefaultBrowserDialogImpl::GetDialogContentURL() const {
-  std::string url_string(chrome::kChromeUIMetroFlowURL);
-  return GURL(url_string);
-}
-
-void SetAsDefaultBrowserDialogImpl::GetWebUIMessageHandlers(
-    std::vector<WebUIMessageHandler*>* handlers) const {
-  handlers->push_back(handler_);
-  owns_handler_ = false;
-}
-
-void SetAsDefaultBrowserDialogImpl::GetDialogSize(gfx::Size* size) const {
-  PrefService* prefs = profile_->GetPrefs();
-  gfx::Font approximate_web_font(
-      prefs->GetString(prefs::kWebKitSansSerifFontFamily),
-      prefs->GetInteger(prefs::kWebKitDefaultFontSize));
-
-  *size = ui::GetLocalizedContentsSizeForFont(
-      IDS_METRO_FLOW_WIDTH_CHARS, IDS_METRO_FLOW_HEIGHT_LINES,
-      approximate_web_font);
-}
-
-std::string SetAsDefaultBrowserDialogImpl::GetDialogArgs() const {
-  return "[]";
-}
-
-void SetAsDefaultBrowserDialogImpl::OnDialogClosed(
-    const std::string& json_retval) {
-  // Register the user's response in UMA.
-  UMA_HISTOGRAM_ENUMERATION(kSetAsDefaultBrowserHistogram,
-                            dialog_interaction_result_,
-                            MAKE_CHROME_DEFAULT_MAX);
-
-  // Suppress showing the default browser infobar if the user explicitly elected
-  // *not to* make Chrome default.
-  if (dialog_interaction_result_ == MAKE_CHROME_DEFAULT_REGRETTED)
-    chrome::DefaultBrowserPromptDeclined(profile_);
-
-  // Carry on with a normal chrome session. For the purpose of surfacing this
-  // dialog the actual browser window had to remain hidden. Now it's time to
-  // show it.
-  if (browser_) {
-    BrowserWindow* window = browser_->window();
-    WebContents* contents = browser_->tab_strip_model()->GetActiveWebContents();
-    window->Show();
-    if (contents)
-      contents->SetInitialFocus();
-  }
-
-  delete this;
-}
-
-void SetAsDefaultBrowserDialogImpl::OnCloseContents(WebContents* source,
-                                                    bool* out_close_dialog) {
-  *out_close_dialog = true;
-}
-
-bool SetAsDefaultBrowserDialogImpl::ShouldShowDialogTitle() const {
-  return true;
-}
-
-bool SetAsDefaultBrowserDialogImpl::HandleContextMenu(
-    const content::ContextMenuParams& params) {
-  return true;
-}
-
-void SetAsDefaultBrowserDialogImpl::SetDialogInteractionResult(
-    MakeChromeDefaultResult result) {
-  dialog_interaction_result_ = result;
-}
-
-void SetAsDefaultBrowserDialogImpl::OnBrowserRemoved(Browser* browser) {
-  if (browser_ == browser) {
-    browser_ = NULL;
-    BrowserList::RemoveObserver(this);
-  }
-}
-
-}  // namespace
-
-SetAsDefaultBrowserUI::SetAsDefaultBrowserUI(content::WebUI* web_ui)
-    : ui::WebDialogUI(web_ui) {
-  content::WebUIDataSource::Add(
-      Profile::FromWebUI(web_ui), CreateSetAsDefaultBrowserUIHTMLSource());
-}
-
-// static
-void SetAsDefaultBrowserUI::Show(Profile* profile, Browser* browser) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  SetAsDefaultBrowserDialogImpl* dialog =
-      new SetAsDefaultBrowserDialogImpl(profile, browser);
-  dialog->ShowDialog();
-}