Remove remote tree host and some related input and metro_driver code

chrome/browser/metro_viewer/chrome_metro_viewer_process_host_aurawin.cc

-// Copyright 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/metro_viewer/chrome_metro_viewer_process_host_aurawin.h"
-
-#include "ash/display/display_info.h"
-#include "ash/display/display_manager.h"
-#include "ash/host/ash_remote_window_tree_host_win.h"
-#include "ash/shell.h"
-#include "ash/wm/window_positioner.h"
-#include "base/logging.h"
-#include "base/memory/ref_counted.h"
-#include "base/strings/stringprintf.h"
-#include "chrome/browser/browser_process.h"
-#include "chrome/browser/browser_process_platform_part_aurawin.h"
-#include "chrome/browser/browser_shutdown.h"
-#include "chrome/browser/chrome_notification_types.h"
-#include "chrome/browser/lifetime/application_lifetime.h"
-#include "chrome/browser/profiles/profile_manager.h"
-#include "chrome/browser/search_engines/template_url_service_factory.h"
-#include "chrome/browser/ui/ash/ash_init.h"
-#include "chrome/browser/ui/browser.h"
-#include "chrome/browser/ui/browser_list.h"
-#include "chrome/browser/ui/browser_navigator.h"
-#include "chrome/browser/ui/browser_navigator_params.h"
-#include "chrome/browser/ui/browser_window.h"
-#include "chrome/browser/ui/host_desktop.h"
-#include "chrome/browser/ui/tabs/tab_strip_model.h"
-#include "chrome/common/env_vars.h"
-#include "components/search_engines/util.h"
-#include "content/public/browser/browser_thread.h"
-#include "content/public/browser/gpu_data_manager.h"
-#include "content/public/browser/notification_service.h"
-#include "content/public/browser/page_navigator.h"
-#include "content/public/browser/web_contents.h"
-#include "ui/aura/remote_window_tree_host_win.h"
-#include "ui/gfx/win/dpi.h"
-#include "ui/metro_viewer/metro_viewer_messages.h"
-#include "url/gurl.h"
-
-namespace {
-
-void CloseOpenAshBrowsers() {
-  BrowserList* browser_list =
-      BrowserList::GetInstance(chrome::HOST_DESKTOP_TYPE_ASH);
-  if (browser_list) {
-    for (BrowserList::const_iterator i = browser_list->begin();
-         i != browser_list->end(); ++i) {
-      Browser* browser = *i;
-      browser->window()->Close();
-      // If the attempt to Close the browser fails due to unload handlers on
-      // the page or in progress downloads, etc, destroy all tabs on the page.
-      while (browser->tab_strip_model()->count())
-        delete browser->tab_strip_model()->GetWebContentsAt(0);
-    }
-  }
-}
-
-void OpenURL(const GURL& url) {
-  chrome::NavigateParams params(
-      ProfileManager::GetActiveUserProfile(),
-      GURL(url),
-      ui::PAGE_TRANSITION_TYPED);
-  params.disposition = NEW_FOREGROUND_TAB;
-  params.host_desktop_type = chrome::HOST_DESKTOP_TYPE_ASH;
-  chrome::Navigate(&params);
-}
-
-}  // namespace
-
-ChromeMetroViewerProcessHost::ChromeMetroViewerProcessHost()
-    : MetroViewerProcessHost(
-          content::BrowserThread::GetMessageLoopProxyForThread(
-              content::BrowserThread::IO)) {
-  chrome::IncrementKeepAliveCount();
-}
-
-ChromeMetroViewerProcessHost::~ChromeMetroViewerProcessHost() {
-}
-
-void ChromeMetroViewerProcessHost::OnChannelError() {
-  // TODO(cpu): At some point we only close the browser. Right now this
-  // is very convenient for developing.
-  DVLOG(1) << "viewer channel error : Quitting browser";
-
-  // Unset environment variable to let breakpad know that metro process wasn't
-  // connected.
-  ::SetEnvironmentVariableA(env_vars::kMetroConnected, NULL);
-
-  // It seems possible that channel is connected, but ASH desktop is not yet
-  // created (instance is still NULL) and we receive channel error.
-  if (aura::RemoteWindowTreeHostWin::Instance()) {
-    aura::RemoteWindowTreeHostWin::Instance()->Disconnected();
-
-    chrome::DecrementKeepAliveCount();
-
-    // If browser is trying to quit, we shouldn't reenter the process.
-    // TODO(shrikant): In general there seem to be issues with how AttemptExit
-    // reentry works. In future release please clean up related code.
-    if (!browser_shutdown::IsTryingToQuit()) {
-      CloseOpenAshBrowsers();
-      chrome::CloseAsh();
-    }
-    // Tell the rest of Chrome about it.
-    content::NotificationService::current()->Notify(
-        chrome::NOTIFICATION_ASH_SESSION_ENDED,
-        content::NotificationService::AllSources(),
-        content::NotificationService::NoDetails());
-    return;
-  }
-
-  chrome::DecrementKeepAliveCount();
-
-  // This will delete the MetroViewerProcessHost object. Don't access member
-  // variables/functions after this call.
-  g_browser_process->platform_part()->OnMetroViewerProcessTerminated();
-}
-
-void ChromeMetroViewerProcessHost::OnChannelConnected(int32_t /*peer_pid*/) {
-  DVLOG(1) << "ChromeMetroViewerProcessHost::OnChannelConnected: ";
-  // Set environment variable to let breakpad know that metro process was
-  // connected.
-  ::SetEnvironmentVariableA(env_vars::kMetroConnected, "1");
-}
-
-void ChromeMetroViewerProcessHost::OnSetTargetSurface(
-    gfx::NativeViewId target_surface,
-    float device_scale) {
-  HWND hwnd = reinterpret_cast<HWND>(target_surface);
-
-  gfx::SetDefaultDeviceScaleFactor(device_scale);
-  chrome::OpenAsh(hwnd);
-  DCHECK(aura::RemoteWindowTreeHostWin::Instance());
-  DCHECK_EQ(hwnd, aura::RemoteWindowTreeHostWin::Instance()->remote_window());
-  ash::Shell::GetInstance()->CreateShelf();
-  ash::Shell::GetInstance()->ShowShelf();
-
-  // Tell our root window host that the viewer has connected.
-  aura::RemoteWindowTreeHostWin::Instance()->Connected(this);
-
-  // On Windows 8 ASH we default to SHOW_STATE_MAXIMIZED for the browser
-  // window. This is to ensure that we honor metro app conventions by default.
-  ash::WindowPositioner::SetMaximizeFirstWindow(true);
-  // Tell the rest of Chrome that Ash is running.
-  content::NotificationService::current()->Notify(
-      chrome::NOTIFICATION_ASH_SESSION_STARTED,
-      content::NotificationService::AllSources(),
-      content::NotificationService::NoDetails());
-}
-
-void ChromeMetroViewerProcessHost::OnOpenURL(const base::string16& url) {
-  OpenURL(GURL(url));
-}
-
-void ChromeMetroViewerProcessHost::OnHandleSearchRequest(
-    const base::string16& search_string) {
-  GURL url(GetDefaultSearchURLForSearchTerms(
-      TemplateURLServiceFactory::GetForProfile(
-          ProfileManager::GetActiveUserProfile()), search_string));
-  if (url.is_valid())
-    OpenURL(url);
-}
-
-void ChromeMetroViewerProcessHost::OnWindowSizeChanged(uint32_t width,
-                                                       uint32_t height) {
-  std::vector<ash::DisplayInfo> info_list;
-  info_list.push_back(ash::DisplayInfo::CreateFromSpec(
-      base::StringPrintf("%dx%d*%f", width, height, gfx::GetDPIScale())));
-  ash::Shell::GetInstance()->display_manager()->OnNativeDisplaysChanged(
-      info_list);
-  aura::RemoteWindowTreeHostWin::Instance()->HandleWindowSizeChanged(width,
-                                                                     height);
-}