Initial import of the Chrome Frame codebase. Integration in chrome.gyp coming...

chrome_frame/chrome_active_document.cc

Index: chrome_frame/chrome_active_document.cc
===================================================================
--- chrome_frame/chrome_active_document.cc	(revision 0)
+++ chrome_frame/chrome_active_document.cc	(revision 0)
@@ -0,0 +1,648 @@
+// Copyright (c) 2009 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.
+
+// Implementation of ChromeActiveDocument
+#include "chrome_frame/chrome_active_document.h"
+
+#include <hlink.h>
+#include <htiface.h>
+#include <mshtmcid.h>
+#include <shdeprecated.h>
+#include <shlguid.h>
+#include <shobjidl.h>
+#include <tlogstg.h>
+#include <urlmon.h>
+#include <wininet.h>
+
+#include "base/command_line.h"
+#include "base/file_util.h"
+#include "base/logging.h"
+#include "base/path_service.h"
+#include "base/process_util.h"
+#include "base/registry.h"
+#include "base/scoped_variant_win.h"
+#include "base/string_tokenizer.h"
+#include "base/string_util.h"
+#include "base/thread.h"
+#include "base/thread_local.h"
+
+#include "grit/generated_resources.h"
+#include "chrome/browser/tab_contents/tab_contents.h"
+#include "chrome/common/chrome_constants.h"
+#include "chrome/common/navigation_types.h"
+#include "chrome/test/automation/browser_proxy.h"
+#include "chrome/test/automation/tab_proxy.h"
+#include "chrome_frame/utils.h"
+
+const wchar_t kChromeAttachExternalTabPrefix[] = L"attach_external_tab";
+
+static const wchar_t kUseChromeNetworking[] = L"UseChromeNetworking";
+static const wchar_t kHandleTopLevelRequests[] =
+    L"HandleTopLevelRequests";
+
+base::ThreadLocalPointer<ChromeActiveDocument> g_active_doc_cache;
+
+bool g_first_launch_by_process_ = true;
+
+ChromeActiveDocument::ChromeActiveDocument()
+    : first_navigation_(true),
+      is_automation_client_reused_(false) {
+}
+
+HRESULT ChromeActiveDocument::FinalConstruct() {
+  // If we have a cached ChromeActiveDocument instance in TLS, then grab
+  // ownership of the cached document's automation client. This is an
+  // optimization to get Chrome active documents to load faster.
+  ChromeActiveDocument* cached_document = g_active_doc_cache.Get();
+  if (cached_document) {
+    DCHECK(automation_client_.get() == NULL);
+    automation_client_.reset(cached_document->automation_client_.release());
+    DLOG(INFO) << "Reusing automation client instance from "
+               << cached_document;
+    DCHECK(automation_client_.get() != NULL);
+    automation_client_->Reinitialize(this);
+    is_automation_client_reused_ = true;
+  } else {
+    // The FinalConstruct implementation in the ChromeFrameActivexBase class
+    // i.e. Base creates an instance of the ChromeFrameAutomationClient class
+    // and initializes it, which would spawn a new Chrome process, etc.
+    // We don't want to be doing this if we have a cached document, whose
+    // automation client instance can be reused.
+    HRESULT hr = Base::FinalConstruct();
+    if (FAILED(hr))
+      return hr;
+  }
+
+  bool chrome_network = GetConfigBool(false, kUseChromeNetworking);
+  bool top_level_requests = GetConfigBool(true, kHandleTopLevelRequests);
+  automation_client_->set_use_chrome_network(chrome_network);
+  automation_client_->set_handle_top_level_requests(top_level_requests);
+
+  find_dialog_.Init(automation_client_.get());
+
+  enabled_commands_map_[OLECMDID_PRINT] = true;
+  enabled_commands_map_[OLECMDID_FIND] = true;
+  enabled_commands_map_[OLECMDID_CUT] = true;
+  enabled_commands_map_[OLECMDID_COPY] = true;
+  enabled_commands_map_[OLECMDID_PASTE] = true;
+  enabled_commands_map_[OLECMDID_SELECTALL] = true;
+  return S_OK;
+}
+
+ChromeActiveDocument::~ChromeActiveDocument() {
+  DLOG(INFO) << __FUNCTION__;
+  if (find_dialog_.IsWindow()) {
+    find_dialog_.DestroyWindow();
+  }
+}
+
+// Override DoVerb
+STDMETHODIMP ChromeActiveDocument::DoVerb(LONG verb,
+                                          LPMSG msg,
+                                          IOleClientSite* active_site,
+                                          LONG index,
+                                          HWND parent_window,
+                                          LPCRECT pos) {
+  // IE will try and in-place activate us in some cases. This happens when
+  // the user opens a new IE window with a URL that has us as the DocObject.
+  // Here we refuse to be activated in-place and we will force IE to UIActivate
+  // us.
+  if (OLEIVERB_INPLACEACTIVATE == verb) {
+    return E_NOTIMPL;
+  }
+  // Check if we should activate as a docobject or not
+  // (client supports IOleDocumentSite)
+  if (doc_site_) {
+    switch (verb) {
+    case OLEIVERB_SHOW:
+    case OLEIVERB_OPEN:
+    case OLEIVERB_UIACTIVATE:
+      if (!m_bUIActive) {
+        return doc_site_->ActivateMe(NULL);
+      }
+      break;
+    }
+  }
+  return IOleObjectImpl<ChromeActiveDocument>::DoVerb(verb,
+                                                      msg,
+                                                      active_site,
+                                                      index,
+                                                      parent_window,
+                                                      pos);
+}
+
+STDMETHODIMP ChromeActiveDocument::InPlaceDeactivate(void) {
+  // Release the pointers we have no need for now.
+  doc_site_.Release();
+  in_place_frame_.Release();
+  return IOleInPlaceObjectWindowlessImpl<ChromeActiveDocument>::
+             InPlaceDeactivate();
+}
+
+// Override IOleInPlaceActiveObjectImpl::OnDocWindowActivate
+STDMETHODIMP ChromeActiveDocument::OnDocWindowActivate(BOOL activate) {
+  DLOG(INFO) << __FUNCTION__;
+  return S_OK;
+}
+
+STDMETHODIMP ChromeActiveDocument::TranslateAccelerator(MSG* msg) {
+  DLOG(INFO) << __FUNCTION__;
+  if (msg == NULL)
+    return E_POINTER;
+
+  if (msg->message == WM_KEYDOWN && msg->wParam == VK_TAB) {
+    HWND focus = ::GetFocus();
+    if (focus != m_hWnd && !::IsChild(m_hWnd, focus)) {
+      // The call to SetFocus triggers a WM_SETFOCUS that makes the base class
+      // set focus to the correct element in Chrome.
+      ::SetFocus(m_hWnd);
+      return S_OK;
+    }
+  }
+
+  return S_FALSE;
+}
+// Override IPersistStorageImpl::IsDirty
+STDMETHODIMP ChromeActiveDocument::IsDirty() {
+  DLOG(INFO) << __FUNCTION__;
+  return S_FALSE;
+}
+
+bool ChromeActiveDocument::is_frame_busting_enabled() {
+  return false;
+}
+
+STDMETHODIMP ChromeActiveDocument::Load(BOOL fully_avalable,
+                                        IMoniker* moniker_name,
+                                        LPBC bind_context,
+                                        DWORD mode) {
+  if (NULL == moniker_name) {
+    return E_INVALIDARG;
+  }
+  CComHeapPtr<WCHAR> display_name;
+  moniker_name->GetDisplayName(bind_context, NULL, &display_name);
+  std::wstring url = display_name;
+
+  bool is_chrome_protocol = StartsWith(url, kChromeProtocolPrefix, false);
+  bool is_new_navigation = true;
+
+  if (is_chrome_protocol) {
+    url.erase(0, lstrlen(kChromeProtocolPrefix));
+    is_new_navigation = 
+        !StartsWith(url, kChromeAttachExternalTabPrefix, false);
+  }
+
+  if (!IsValidUrlScheme(url)) {
+    DLOG(WARNING) << __FUNCTION__ << " Disallowing navigation to url: "
+                  << url;
+    return E_INVALIDARG;
+  }
+
+  if (!is_new_navigation) {
+    WStringTokenizer tokenizer(url, L"&");
+    // Skip over kChromeAttachExternalTabPrefix
+    tokenizer.GetNext();
+
+    intptr_t external_tab_cookie = 0;
+
+    if (tokenizer.GetNext())
+      StringToInt(tokenizer.token(),
+                  reinterpret_cast<int*>(&external_tab_cookie));
+
+    if (external_tab_cookie == 0) {
+      NOTREACHED() << "invalid url for attach tab: " << url;
+      return E_FAIL;
+    }
+
+    automation_client_->AttachExternalTab(external_tab_cookie);
+  } 
+
+  // Initiate navigation before launching chrome so that the url will be
+  // cached and sent with launch settings.
+  if (is_new_navigation) {
+    url_.Reset(::SysAllocString(url.c_str()));
+    if (url_.Length()) {
+      std::string utf8_url;
+      WideToUTF8(url_, url_.Length(), &utf8_url);
+      if (!automation_client_->InitiateNavigation(utf8_url)) {
+        DLOG(ERROR) << "Invalid URL: " << url;
+        Error(L"Invalid URL");
+        url_.Reset();
+        return E_INVALIDARG;
+      }
+
+      DLOG(INFO) << "Url is " << url_;
+    }
+  }
+
+  if (!is_automation_client_reused_ &&
+      !InitializeAutomation(GetHostProcessName(false), L"", IsIEInPrivate())) {
+    return E_FAIL;
+  }
+
+  if (!is_chrome_protocol) {
+    CComObject<UrlmonUrlRequest>* new_request = NULL;
+    CComObject<UrlmonUrlRequest>::CreateInstance(&new_request);
+    new_request->AddRef();
+
+    if (SUCCEEDED(new_request->ConnectToExistingMoniker(moniker_name,
+                                                        bind_context,
+                                                        url))) {
+      base_url_request_.swap(&new_request);
+      DCHECK(new_request == NULL);
+    } else {
+      new_request->Release();
+    }
+  }
+
+  UMA_HISTOGRAM_CUSTOM_COUNTS("ChromeFrame.FullTabLaunchType",
+                              is_chrome_protocol, 0, 1, 2);
+  return S_OK;
+}
+
+STDMETHODIMP ChromeActiveDocument::Save(IMoniker* moniker_name,
+                                        LPBC bind_context,
+                                        BOOL remember) {
+  return E_NOTIMPL;
+}
+
+STDMETHODIMP ChromeActiveDocument::SaveCompleted(IMoniker* moniker_name,
+                                                 LPBC bind_context) {
+  return E_NOTIMPL;
+}
+
+STDMETHODIMP ChromeActiveDocument::GetCurMoniker(IMoniker** moniker_name) {
+  return E_NOTIMPL;
+}
+
+STDMETHODIMP ChromeActiveDocument::GetClassID(CLSID* class_id) {
+  if (NULL == class_id) {
+    return E_POINTER;
+  }
+  *class_id = GetObjectCLSID();
+  return S_OK;
+}
+
+STDMETHODIMP ChromeActiveDocument::QueryStatus(const GUID* cmd_group_guid,
+                                               ULONG number_of_commands,
+                                               OLECMD commands[],
+                                               OLECMDTEXT* command_text) {
+  DLOG(INFO) << __FUNCTION__;
+  for (ULONG command_index = 0; command_index < number_of_commands;
+       command_index++) {
+    DLOG(INFO) << "Command id = " << commands[command_index].cmdID;
+    if (enabled_commands_map_.find(commands[command_index].cmdID) !=
+        enabled_commands_map_.end()) {
+      commands[command_index].cmdf = OLECMDF_ENABLED;
+    }
+  }
+  return S_OK;
+}
+
+STDMETHODIMP ChromeActiveDocument::Exec(const GUID* cmd_group_guid,
+                                        DWORD command_id,
+                                        DWORD cmd_exec_opt,
+                                        VARIANT* in_args,
+                                        VARIANT* out_args) {
+  DLOG(INFO) << __FUNCTION__ << " Cmd id =" << command_id;
+  // Bail out if we have been uninitialized.
+  if (automation_client_.get() && automation_client_->tab()) {
+    return ProcessExecCommand(cmd_group_guid, command_id, cmd_exec_opt,
+                              in_args, out_args);
+  }
+  return S_FALSE;
+}
+
+STDMETHODIMP ChromeActiveDocument::GetUrlForEvents(BSTR* url) {
+  if (NULL == url) {
+    return E_POINTER;
+  }
+  *url = ::SysAllocString(url_);
+  return S_OK;
+}
+
+HRESULT ChromeActiveDocument::IOleObject_SetClientSite(
+    IOleClientSite* client_site) {
+  if (client_site == NULL) {
+    ChromeActiveDocument* cached_document = g_active_doc_cache.Get();
+    if (cached_document) {
+      DCHECK(this == cached_document);
+      g_active_doc_cache.Set(NULL);
+      cached_document->Release();
+    }
+  }
+  return Base::IOleObject_SetClientSite(client_site);
+}
+
+
+HRESULT ChromeActiveDocument::ActiveXDocActivate(LONG verb) {
+  HRESULT hr = S_OK;
+  m_bNegotiatedWnd = TRUE;
+  if (!m_bInPlaceActive) {
+    hr = m_spInPlaceSite->CanInPlaceActivate();
+    if (FAILED(hr)) {
+      return hr;
+    }
+    m_spInPlaceSite->OnInPlaceActivate();
+  }
+  m_bInPlaceActive = TRUE;
+  // get location in the parent window,
+  // as well as some information about the parent
+  ScopedComPtr<IOleInPlaceUIWindow> in_place_ui_window;
+  frame_info_.cb = sizeof(OLEINPLACEFRAMEINFO);
+  HWND parent_window = NULL;
+  if (m_spInPlaceSite->GetWindow(&parent_window) == S_OK) {
+    in_place_frame_.Release();
+    RECT position_rect = {0};
+    RECT clip_rect = {0};
+    m_spInPlaceSite->GetWindowContext(in_place_frame_.Receive(),
+                                      in_place_ui_window.Receive(),
+                                      &position_rect,
+                                      &clip_rect,
+                                      &frame_info_);
+    if (!m_bWndLess) {
+      if (IsWindow()) {
+        ::ShowWindow(m_hWnd, SW_SHOW);
+        SetFocus();
+      } else {
+        m_hWnd = Create(parent_window, position_rect);
+      }
+    }
+    SetObjectRects(&position_rect, &clip_rect);
+  }
+
+  ScopedComPtr<IOleInPlaceActiveObject> in_place_active_object(this);
+
+  // Gone active by now, take care of UIACTIVATE
+  if (DoesVerbUIActivate(verb)) {
+    if (!m_bUIActive) {
+      m_bUIActive = TRUE;
+      hr = m_spInPlaceSite->OnUIActivate();
+      if (FAILED(hr)) {
+        return hr;
+      }
+      // set ourselves up in the host
+      if (in_place_active_object) {
+        if (in_place_frame_) {
+          in_place_frame_->SetActiveObject(in_place_active_object, NULL);
+        }
+        if (in_place_ui_window) {
+          in_place_ui_window->SetActiveObject(in_place_active_object, NULL);
+        }
+      }
+    }
+  }
+  m_spClientSite->ShowObject();
+  return S_OK;
+}
+
+void ChromeActiveDocument::OnNavigationStateChanged(int tab_handle, int flags,
+    const IPC::NavigationInfo& nav_info) {
+  // TODO(joshia): handle INVALIDATE_TAB,INVALIDATE_LOAD etc.
+  DLOG(INFO) << __FUNCTION__ << std::endl << " Flags: " << flags
+      << "Url: " << nav_info.url <<
+      ", Title: " << nav_info.title <<
+      ", Type: " << nav_info.navigation_type << ", Relative Offset: " <<
+      nav_info.relative_offset << ", Index: " << nav_info.navigation_index;;
+
+  UpdateNavigationState(nav_info);
+}
+
+void ChromeActiveDocument::OnUpdateTargetUrl(int tab_handle,
+    const std::wstring& new_target_url) {
+  if (in_place_frame_) {
+    in_place_frame_->SetStatusText(new_target_url.c_str());
+  }
+}
+
+bool IsFindAccelerator(const MSG& msg) {
+  // TODO(robertshield): This may not stand up to localization. Fix if this
+  // is the case.
+  return msg.message == WM_KEYDOWN && msg.wParam == 'F' &&
+         win_util::IsCtrlPressed() &&
+         !(win_util::IsAltPressed() || win_util::IsShiftPressed());
+}
+
+void ChromeActiveDocument::OnAcceleratorPressed(int tab_handle,
+                                                const MSG& accel_message) {
+  bool handled_accel = false;
+  if (in_place_frame_ != NULL) {
+    handled_accel = (S_OK == in_place_frame_->TranslateAcceleratorW(
+        const_cast<MSG*>(&accel_message), 0));
+  }
+
+  if (!handled_accel) {
+    if (IsFindAccelerator(accel_message)) {
+      // Handle the showing of the find dialog explicitly.
+      OnFindInPage();
+    } else if (AllowFrameToTranslateAccelerator(accel_message) != S_OK) {
+      DLOG(INFO) << "IE DID NOT handle accel key " << accel_message.wParam;
+      TabProxy* tab = GetTabProxy();
+      if (tab) {
+        tab->ProcessUnhandledAccelerator(accel_message);
+      }
+    }
+  } else {
+    DLOG(INFO) << "IE handled accel key " << accel_message.wParam;
+  }
+}
+
+void ChromeActiveDocument::OnTabbedOut(int tab_handle, bool reverse) {
+  DLOG(INFO) << __FUNCTION__;
+  if (in_place_frame_) {
+    MSG msg = { NULL, WM_KEYDOWN, VK_TAB };
+    in_place_frame_->TranslateAcceleratorW(&msg, 0);
+  }
+}
+
+void ChromeActiveDocument::OnDidNavigate(int tab_handle,
+                                         const IPC::NavigationInfo& nav_info) {
+  DLOG(INFO) << __FUNCTION__ << std::endl << "Url: " << nav_info.url <<
+      ", Title: " << nav_info.title <<
+      ", Type: " << nav_info.navigation_type << ", Relative Offset: " <<
+      nav_info.relative_offset << ", Index: " << nav_info.navigation_index;
+
+  // This could be NULL if the active document instance is being destroyed.
+  if (!m_spInPlaceSite) {
+    DLOG(INFO) << __FUNCTION__ << "m_spInPlaceSite is NULL. Returning";
+    return;
+  }
+
+  UpdateNavigationState(nav_info);
+}
+
+void ChromeActiveDocument::UpdateNavigationState(
+    const IPC::NavigationInfo& new_navigation_info) {
+  bool is_title_changed = (navigation_info_.title != new_navigation_info.title);
+  bool is_url_changed = (navigation_info_.url.is_valid() &&
+      (navigation_info_.url != new_navigation_info.url));
+  bool is_ssl_state_changed =
+      (navigation_info_.security_style != new_navigation_info.security_style) ||
+      (navigation_info_.has_mixed_content !=
+          new_navigation_info.has_mixed_content);
+
+  navigation_info_ = new_navigation_info;
+
+  if (is_title_changed) {
+    ScopedVariant title(navigation_info_.title.c_str());
+    IEExec(NULL, OLECMDID_SETTITLE, OLECMDEXECOPT_DONTPROMPTUSER,
+           title.AsInput(), NULL);
+  }
+
+  if (is_ssl_state_changed) {
+    int lock_status = SECURELOCK_SET_UNSECURE;
+    switch (navigation_info_.security_style) {
+      case SECURITY_STYLE_AUTHENTICATION_BROKEN:
+        lock_status = SECURELOCK_SET_SECUREUNKNOWNBIT;
+        break;
+      case SECURITY_STYLE_AUTHENTICATED:
+        lock_status = navigation_info_.has_mixed_content ?
+            SECURELOCK_SET_MIXED : SECURELOCK_SET_SECUREUNKNOWNBIT;
+        break;
+      default:
+        break;
+    }
+
+    ScopedVariant secure_lock_status(lock_status);
+    IEExec(&CGID_ShellDocView, INTERNAL_CMDID_SET_SSL_LOCK,
+           OLECMDEXECOPT_DODEFAULT, secure_lock_status.AsInput(), NULL);
+  }
+
+  if (navigation_info_.url.is_valid() &&
+      (is_url_changed || url_.Length() == 0)) {
+    url_.Allocate(UTF8ToWide(navigation_info_.url.spec()).c_str());
+    // Now call the FireNavigateCompleteEvent which makes IE update the text
+    // in the address-bar. We call the FireBeforeNavigateComplete2Event and
+    // FireDocumentComplete event just for completeness sake. If some BHO
+    // chooses to cancel the navigation in the OnBeforeNavigate2 handler
+    // we will ignore the cancellation request.
+
+    // Todo(joshia): investigate if there's a better way to set URL in the
+    // address bar
+    ScopedComPtr<IWebBrowserEventsService> web_browser_events_svc;
+    DoQueryService(__uuidof(web_browser_events_svc), m_spClientSite,
+                   web_browser_events_svc.Receive());
+    if (web_browser_events_svc) {
+      // TODO(joshia): maybe we should call FireBeforeNavigate2Event in
+      // ChromeActiveDocument::Load and abort if cancelled.
+      VARIANT_BOOL should_cancel = VARIANT_FALSE;
+      web_browser_events_svc->FireBeforeNavigate2Event(&should_cancel);
+      web_browser_events_svc->FireNavigateComplete2Event();
+      if (VARIANT_TRUE != should_cancel) {
+        web_browser_events_svc->FireDocumentCompleteEvent();
+      }
+    }
+  }
+}
+
+void ChromeActiveDocument::OnFindInPage() {
+  TabProxy* tab = GetTabProxy();
+  if (tab) {
+    if (!find_dialog_.IsWindow()) {
+      find_dialog_.Create(m_hWnd);
+    }
+
+    find_dialog_.ShowWindow(SW_SHOW);
+  }
+}
+
+void ChromeActiveDocument::OnViewSource() {
+  DCHECK(navigation_info_.url.is_valid());
+  std::string url_to_open = "view-source:";
+  url_to_open += navigation_info_.url.spec();
+  OnOpenURL(0, GURL(url_to_open), NEW_WINDOW);
+}
+
+void ChromeActiveDocument::OnOpenURL(int tab_handle, const GURL& url_to_open,
+                                     int open_disposition) {
+  // If the disposition indicates that we should be opening the URL in the
+  // current tab, then we can reuse the ChromeFrameAutomationClient instance
+  // maintained by the current ChromeActiveDocument instance. We cache this
+  // instance so that it can be used by the new ChromeActiveDocument instance
+  // which may be instantiated for handling the new URL.
+  if (open_disposition == CURRENT_TAB) {
+    // Grab a reference to ensure that the document remains valid.
+    AddRef();
+    g_active_doc_cache.Set(this);
+  }
+
+  Base::OnOpenURL(tab_handle, url_to_open, open_disposition);
+}
+
+void ChromeActiveDocument::OnLoad(int tab_handle, const GURL& url) {
+  if (ready_state_ < READYSTATE_COMPLETE) {
+    ready_state_ = READYSTATE_COMPLETE;
+    FireOnChanged(DISPID_READYSTATE);
+  }
+}
+
+bool ChromeActiveDocument::PreProcessContextMenu(HMENU menu) {
+  ScopedComPtr<IBrowserService> browser_service;
+  ScopedComPtr<ITravelLog> travel_log;
+
+  DoQueryService(SID_SShellBrowser, m_spClientSite, browser_service.Receive());
+  if (!browser_service)
+    return true;
+
+  browser_service->GetTravelLog(travel_log.Receive());
+  if (!travel_log)
+    return true;
+
+  if (SUCCEEDED(travel_log->GetTravelEntry(browser_service, TLOG_BACK, NULL))) {
+    EnableMenuItem(menu, IDS_CONTENT_CONTEXT_BACK, MF_BYCOMMAND | MF_ENABLED);
+  } else {
+    EnableMenuItem(menu, IDS_CONTENT_CONTEXT_BACK, MF_BYCOMMAND | MFS_DISABLED);
+  }
+
+
+  if (SUCCEEDED(travel_log->GetTravelEntry(browser_service, TLOG_FORE, NULL))) {
+    EnableMenuItem(menu, IDS_CONTENT_CONTEXT_FORWARD,
+                   MF_BYCOMMAND | MF_ENABLED);
+  } else {
+    EnableMenuItem(menu, IDS_CONTENT_CONTEXT_FORWARD,
+                   MF_BYCOMMAND | MFS_DISABLED);
+  }
+
+  // Call base class (adds 'About' item)
+  return Base::PreProcessContextMenu(menu);
+}
+
+bool ChromeActiveDocument::HandleContextMenuCommand(UINT cmd) {
+  ScopedComPtr<IWebBrowser2> web_browser2;
+  DoQueryService(SID_SWebBrowserApp, m_spClientSite, web_browser2.Receive());
+
+  switch (cmd) {
+    case IDS_CONTENT_CONTEXT_BACK:
+      web_browser2->GoBack();
+      break;
+
+    case IDS_CONTENT_CONTEXT_FORWARD:
+      web_browser2->GoForward();
+      break;
+
+    case IDS_CONTENT_CONTEXT_RELOAD:
+      web_browser2->Refresh();
+      break;
+
+    default:
+      return Base::HandleContextMenuCommand(cmd);
+  }
+
+  return true;
+}
+
+HRESULT ChromeActiveDocument::IEExec(const GUID* cmd_group_guid,
+                                     DWORD command_id, DWORD cmd_exec_opt,
+                                     VARIANT* in_args, VARIANT* out_args) {
+  HRESULT hr = E_FAIL;
+  ScopedComPtr<IOleCommandTarget> frame_cmd_target;
+  if (m_spInPlaceSite)
+    hr = frame_cmd_target.QueryFrom(m_spInPlaceSite);
+
+  if (frame_cmd_target)
+    hr = frame_cmd_target->Exec(cmd_group_guid, command_id, cmd_exec_opt,
+                                in_args, out_args);
+
+  return hr;
+}