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

chrome_frame/chrome_frame_npapi.cc

Index: chrome_frame/chrome_frame_npapi.cc
===================================================================
--- chrome_frame/chrome_frame_npapi.cc	(revision 0)
+++ chrome_frame/chrome_frame_npapi.cc	(revision 0)
@@ -0,0 +1,1462 @@
+// 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.
+
+#include "chrome_frame/chrome_frame_npapi.h"
+
+#include "base/basictypes.h"
+#include "base/logging.h"
+#include "base/message_loop.h"
+#include "base/string_util.h"
+#include "base/win_util.h"
+#include "chrome/test/automation/tab_proxy.h"
+#include "chrome_frame/ff_privilege_check.h"
+#include "chrome_frame/utils.h"
+
+MessageLoop* ChromeFrameNPAPI::message_loop_ = NULL;
+int ChromeFrameNPAPI::instance_count_ = 0;
+
+static const char* kNpEventNames[] = {
+  "focus",
+  "blur",
+};
+
+NPClass ChromeFrameNPAPI::plugin_class_ = {
+  NP_CLASS_STRUCT_VERSION,
+  ChromeFrameNPAPI::AllocateObject,
+  ChromeFrameNPAPI::DeallocateObject,
+  ChromeFrameNPAPI::Invalidate,
+  ChromeFrameNPAPI::HasMethod,
+  ChromeFrameNPAPI::Invoke,
+  NULL,  // invokeDefault
+  ChromeFrameNPAPI::HasProperty,
+  ChromeFrameNPAPI::GetProperty,
+  ChromeFrameNPAPI::SetProperty,
+  NULL,  // remove property
+  NULL,  // enumeration
+  NULL,  // construct
+};
+
+NPIdentifier
+    ChromeFrameNPAPI::plugin_property_identifiers_[PLUGIN_PROPERTY_COUNT]
+        = {0};
+
+const NPUTF8* ChromeFrameNPAPI::plugin_property_identifier_names_[] = {
+  "version",
+  "src",
+  "onload",
+  "onloaderror",
+  "onmessage",
+  "readystate",
+  "onprivatemessage",
+  "usechromenetwork",
+};
+
+const NPUTF8* ChromeFrameNPAPI::plugin_method_identifier_names_[] = {
+  "postMessage",
+  "postPrivateMessage",
+};
+
+ChromeFrameNPAPI::PluginMethod ChromeFrameNPAPI::plugin_methods_[] = {
+  &ChromeFrameNPAPI::postMessage,
+  &ChromeFrameNPAPI::postPrivateMessage,
+};
+
+NPIdentifier
+    ChromeFrameNPAPI::plugin_method_identifiers_[arraysize(plugin_methods_)]
+        = {0};
+
+
+void ChromeFrameNPAPI::CompileAsserts() {
+  NOTREACHED();  // This function should never be invoked.
+
+  COMPILE_ASSERT(arraysize(plugin_method_identifier_names_) ==
+                 arraysize(plugin_methods_),
+                 you_must_add_both_plugin_method_and_name);
+
+  COMPILE_ASSERT(arraysize(plugin_property_identifier_names_) ==
+                 arraysize(plugin_property_identifiers_),
+                 you_must_add_both_plugin_property_and_name);
+}
+
+static const int kMaxBytesForPluginConsumption = 0x7FFFFFFF;
+
+static const char kPluginSrcAttribute[] = "src";
+static const char kPluginForceFullPageAttribute[] = "force_full_page";
+static const char kPluginOnloadAttribute[] = "onload";
+static const char kPluginOnErrorAttribute[] = "onloaderror";
+static const char kPluginOnMessageAttribute[] = "onmessage";
+static const char kPluginOnPrivateMessageAttribute[] = "onprivatemessage";
+// These properties can only be set in arguments at control instantiation.
+// When the privileged_mode property is provided and set to true, the control
+// will probe for whether its hosting document has the system principal, in
+// which case privileged mode will be enabled.
+static const char kPluginPrivilegedModeAttribute[] = "privileged_mode";
+// If privileged mode is enabled, the string value of this argument will
+// be appended to the chrome.exe command line.
+static const char kPluginChromeExtraArguments[] = "chrome_extra_arguments";
+// If privileged mode is enabled, the string value of this argument will
+// be used as the profile name for our chrome.exe instance.
+static const char kPluginChromeProfileName[] = "chrome_profile_name";
+// If chrome network stack is to be used
+static const char kPluginUseChromeNetwork[] = "usechromenetwork";
+
+
+NPError NPP_New(NPMIMEType plugin_type, NPP instance, uint16 mode, int16 argc,
+                char* argn[], char* argv[], NPSavedData* saved) {
+  if (instance == NULL)
+    return NPERR_INVALID_INSTANCE_ERROR;
+
+  ChromeFrameNPAPI::ChromeFrameNPObject* chrome_frame_npapi_obj =
+      reinterpret_cast<ChromeFrameNPAPI::ChromeFrameNPObject*>(
+          npapi::CreateObject(instance, ChromeFrameNPAPI::PluginClass()));
+  DCHECK(chrome_frame_npapi_obj != NULL);
+
+  ChromeFrameNPAPI* plugin_instance =
+      chrome_frame_npapi_obj->chrome_frame_plugin_instance;
+  DCHECK(plugin_instance != NULL);
+
+  // Note that we MUST set instance->pdata BEFORE calling Initialize. This is
+  // because Initialize can call back into the NPAPI host which will need the
+  // pdata field to be set.
+  chrome_frame_npapi_obj->chrome_frame_plugin_instance =
+      plugin_instance;
+  instance->pdata = chrome_frame_npapi_obj;
+
+  bool init = plugin_instance->Initialize(plugin_type, instance,
+                                          mode, argc, argn, argv);
+  DCHECK(init);
+
+  return NPERR_NO_ERROR;
+}
+
+NPError NPP_Destroy(NPP instance, NPSavedData** save) {
+  // Takes ownership and releases the object at the end of scope.
+  ScopedNpObject<ChromeFrameNPAPI::ChromeFrameNPObject> chrome_frame_npapi_obj(
+      reinterpret_cast<ChromeFrameNPAPI::ChromeFrameNPObject*>(
+          instance->pdata));
+
+  if (chrome_frame_npapi_obj.get()) {
+    ChromeFrameNPAPI* plugin_instance =
+        ChromeFrameNPAPI::ChromeFrameInstanceFromPluginInstance(instance);
+
+    plugin_instance->Uninitialize();
+    instance->pdata = NULL;
+  }
+
+  return NPERR_NO_ERROR;
+}
+
+NPError NPP_SetWindow(NPP instance, NPWindow* window_info) {
+  if (window_info == NULL) {
+    NOTREACHED();
+    return NPERR_GENERIC_ERROR;
+  }
+
+  ChromeFrameNPAPI* plugin_instance =
+      ChromeFrameNPAPI::ChromeFrameInstanceFromPluginInstance(instance);
+
+  if (plugin_instance == NULL) {
+    return NPERR_INVALID_INSTANCE_ERROR;
+  }
+
+  plugin_instance->SetWindow(window_info);
+  return NPERR_NO_ERROR;
+}
+
+NPError NPP_NewStream(NPP instance, NPMIMEType type, NPStream* stream,
+                      NPBool seekable, uint16* stream_type) {
+  NPAPIUrlRequest* url_request = ChromeFrameNPAPI::ValidateRequest(
+      instance, stream->notifyData);
+  if (url_request) {
+    if (!url_request->OnStreamCreated(type, stream))
+      return NPERR_GENERIC_ERROR;
+  }
+
+  // We need to return the requested stream mode if we are returning a success
+  // code. If we don't do this it causes Opera to blow up.
+  *stream_type = NP_NORMAL;
+  return NPERR_NO_ERROR;
+}
+
+NPError NPP_DestroyStream(NPP instance, NPStream* stream, NPReason reason) {
+  NPAPIUrlRequest* url_request = ChromeFrameNPAPI::ValidateRequest(
+      instance, stream->notifyData);
+  if (url_request) {
+    url_request->OnStreamDestroyed(reason);
+  }
+
+  return NPERR_NO_ERROR;
+}
+
+NPError NPP_GetValue(NPP instance, NPPVariable variable, void* value) {
+  if (variable == NPPVpluginScriptableNPObject) {
+    void** plugin = reinterpret_cast<void**>(value);
+    ChromeFrameNPAPI::ChromeFrameNPObject* chrome_frame_npapi_obj =
+        reinterpret_cast<ChromeFrameNPAPI::ChromeFrameNPObject*>(
+            instance->pdata);
+    // Return value is expected to be retained
+    npapi::RetainObject(reinterpret_cast<NPObject*>(chrome_frame_npapi_obj));
+    *plugin = chrome_frame_npapi_obj;
+    return NPERR_NO_ERROR;
+  }
+  return NPERR_GENERIC_ERROR;
+}
+
+NPError NPP_SetValue(NPP instance, NPNVariable variable, void* value) {
+  return NPERR_GENERIC_ERROR;
+}
+
+int32 NPP_WriteReady(NPP instance, NPStream* stream) {
+  NPAPIUrlRequest* url_request = ChromeFrameNPAPI::ValidateRequest(
+      instance, stream->notifyData);
+  if (url_request) {
+    return url_request->OnWriteReady();
+  }
+
+  return kMaxBytesForPluginConsumption;
+}
+
+int32 NPP_Write(NPP instance, NPStream* stream, int32 offset, int32 len,
+                void* buffer) {
+  NPAPIUrlRequest* url_request = ChromeFrameNPAPI::ValidateRequest(
+      instance, stream->notifyData);
+  if (url_request) {
+    return url_request->OnWrite(buffer, len);
+  }
+
+  return len;
+}
+
+void NPP_URLNotify(NPP instance, const char* url, NPReason reason,
+                   void* notifyData) {
+  ChromeFrameNPAPI* plugin_instance =
+      ChromeFrameNPAPI::ChromeFrameInstanceFromPluginInstance(instance);
+  if (plugin_instance) {
+    plugin_instance->UrlNotify(url, reason, notifyData);
+  }
+}
+
+void NPP_Print(NPP instance, NPPrint* print_info) {
+  ChromeFrameNPAPI* plugin_instance =
+      ChromeFrameNPAPI::ChromeFrameInstanceFromPluginInstance(instance);
+
+  if (plugin_instance == NULL) {
+    NOTREACHED();
+    return;
+  }
+
+  plugin_instance->Print(print_info);
+}
+
+// ChromeFrameNPAPI member defines.
+
+// TODO(tommi): remove ignore_setfocus_ since that's not how focus is
+//  handled anymore.
+
+ChromeFrameNPAPI::ChromeFrameNPAPI()
+    : instance_(NULL),
+    mode_(NP_EMBED),
+    force_full_page_plugin_(false),
+    ready_state_(READYSTATE_LOADING),
+    enabled_popups_(false) {
+}
+
+ChromeFrameNPAPI::~ChromeFrameNPAPI() {
+  if (IsWindow()) {
+    if (!UnsubclassWindow()) {
+      // TODO(tommi): Figure out why this can sometimes happen in the
+      // WidgetModeFF_Resize unittest.
+      DLOG(ERROR) << "Couldn't unsubclass safely!";
+      UnsubclassWindow(TRUE);
+    }
+  }
+  m_hWnd = NULL;
+
+  instance_count_--;
+  if (instance_count_ <= 0) {
+    delete message_loop_;
+    message_loop_ = NULL;
+  }
+
+  Uninitialize();
+}
+
+std::string GetLocation(NPP instance, NPObject* window) {
+  if (!window) {
+    // Can fail if the browser is closing (seen in Opera).
+    return "";
+  }
+
+  std::string result;
+  ScopedNpVariant href;
+  ScopedNpVariant location;
+
+  bool ok = npapi::GetProperty(instance, window,
+      npapi::GetStringIdentifier("location"), &location);
+  DCHECK(ok);
+  DCHECK(location.type == NPVariantType_Object);
+
+  if (ok) {
+    ok = npapi::GetProperty(instance,
+        location.value.objectValue,
+        npapi::GetStringIdentifier("href"),
+        &href);
+    DCHECK(ok);
+    DCHECK(href.type == NPVariantType_String);
+    if (ok) {
+      result.assign(href.value.stringValue.UTF8Characters,
+                    href.value.stringValue.UTF8Length);
+    }
+  }
+
+  return result;
+}
+
+std::string ChromeFrameNPAPI::GetLocation() {
+  // Note that GetWindowObject() will cache the window object here.
+  return ::GetLocation(instance_, GetWindowObject());
+}
+
+bool ChromeFrameNPAPI::Initialize(NPMIMEType mime_type, NPP instance,
+                                  uint16 mode, int16 argc, char* argn[],
+                                  char* argv[]) {
+  if (!Base::Initialize())
+    return false;
+
+  instance_ = instance;
+  mime_type_ = mime_type;
+  mode_ = mode;
+  document_url_ = GetLocation();
+
+  if (instance_count_ == 0) {
+    DCHECK(message_loop_ == NULL);
+    message_loop_ = new MessageLoop();
+  }
+
+  instance_count_++;
+
+  // Create our prefs service wrapper here.
+  DCHECK(!pref_service_.get());
+  pref_service_ = CreatePrefService();
+  if (!pref_service_.get()) {
+    NOTREACHED() << "new NpProxyService";
+    return false;
+  }
+
+  // Temporary variables for privileged only parameters
+  const char* onprivatemessage_arg = NULL;
+  const char* chrome_extra_arguments_arg = NULL;
+  const char* chrome_profile_name_arg = NULL;
+  bool chrome_network_arg_set = false;
+  bool chrome_network_arg = false;
+  bool wants_privileged = false;
+
+  for (int i = 0; i < argc; ++i) {
+    if (LowerCaseEqualsASCII(argn[i], kPluginSrcAttribute)) {
+      src_ = ResolveURL(GetDocumentUrl(), argv[i]);
+    } else if (LowerCaseEqualsASCII(argn[i], kPluginForceFullPageAttribute)) {
+      force_full_page_plugin_ = atoi(argv[i]) ? true : false;
+    } else if (LowerCaseEqualsASCII(argn[i], kPluginOnErrorAttribute)) {
+      onerror_handler_ = JavascriptToNPObject(argv[i]);
+    } else if (LowerCaseEqualsASCII(argn[i], kPluginOnMessageAttribute)) {
+      onmessage_handler_ = JavascriptToNPObject(argv[i]);
+    } else if (LowerCaseEqualsASCII(argn[i],
+                                   kPluginPrivilegedModeAttribute)) {
+      // Test for the FireFox privileged mode if the user requests it
+      // in initialization parameters.
+      wants_privileged = atoi(argv[i]) ? true : false;
+    } else if (LowerCaseEqualsASCII(argn[i],
+                                    kPluginOnPrivateMessageAttribute)) {
+      onprivatemessage_arg = argv[i];
+    } else if (LowerCaseEqualsASCII(argn[i], kPluginChromeExtraArguments)) {
+      chrome_extra_arguments_arg = argv[i];
+    } else if (LowerCaseEqualsASCII(argn[i], kPluginChromeProfileName)) {
+      chrome_profile_name_arg = argv[i];
+    } else if (LowerCaseEqualsASCII(argn[i], kPluginUseChromeNetwork)) {
+      chrome_network_arg_set = true;
+      chrome_network_arg = atoi(argv[i]) ? true : false;
+    }
+  }
+
+  // Is the privileged mode requested?
+  if (wants_privileged) {
+    is_privileged_ = IsFireFoxPrivilegedInvocation(instance);
+    if (!is_privileged_) {
+      DLOG(WARNING) << "Privileged mode requested in non-privileged context";
+    }
+  }
+
+  std::wstring extra_arguments;
+  std::wstring profile_name(GetHostProcessName(false));
+  if (is_privileged_) {
+    // Process any privileged mode-only arguments we were handed.
+    if (onprivatemessage_arg)
+      onprivatemessage_handler_ = JavascriptToNPObject(onprivatemessage_arg);
+
+    if (chrome_extra_arguments_arg)
+      extra_arguments = UTF8ToWide(chrome_extra_arguments_arg);
+
+    if (chrome_profile_name_arg)
+      profile_name = UTF8ToWide(chrome_profile_name_arg);
+
+    if (chrome_network_arg_set)
+      automation_client_->set_use_chrome_network(chrome_network_arg);
+
+  }
+
+  // TODO(joshia): Initialize navigation here and send proxy config as
+  // part of LaunchSettings
+  /*
+  if (!src_.empty())
+    automation_client_->InitiateNavigation(src_);
+
+  std::string proxy_settings;
+  bool has_prefs = pref_service_->Initialize(instance_,
+                                             automation_client_.get());
+  if (has_prefs && pref_service_->GetProxyValueJSONString(&proxy_settings)) {
+    automation_client_->SetProxySettings(proxy_settings);
+  }
+  */
+
+  // We can't call SubscribeToFocusEvents here since
+  // when Initialize gets called, Opera is in a state where
+  // it can't handle calls back and the thread will hang.
+  // Instead, we call SubscribeToFocusEvents when we initialize
+  // our plugin window.
+
+  // TODO(stoyan): Ask host for specific interface whether to honor
+  // host's in-private mode.
+  return InitializeAutomation(profile_name, extra_arguments,
+                              GetBrowserIncognitoMode());
+}
+
+void ChromeFrameNPAPI::Uninitialize() {
+  // Don't call SetReadyState as it will end up calling FireEvent.
+  // We are in the context of NPP_DESTROY.
+  ready_state_ = READYSTATE_UNINITIALIZED;
+
+  UnsubscribeFromFocusEvents();
+
+  if (pref_service_) {
+    pref_service_->UnInitialize();
+    pref_service_ = NULL;
+  }
+
+  window_object_.Free();
+  onerror_handler_.Free();
+  onmessage_handler_.Free();
+  onprivatemessage_handler_.Free();
+
+  Base::Uninitialize();
+}
+
+void ChromeFrameNPAPI::OnFinalMessage(HWND window) {
+  // The automation server should be gone by now.
+  Uninitialize();
+}
+
+void ChromeFrameNPAPI::SubscribeToFocusEvents() {
+  DCHECK(focus_listener_.get() == NULL);
+
+  focus_listener_ = new DomEventListener(this);
+  if (!focus_listener_->Subscribe(instance_, kNpEventNames,
+                                  arraysize(kNpEventNames))) {
+    focus_listener_ = NULL;
+    focus_listener_ = new NPObjectEventListener(this);
+    if (!focus_listener_->Subscribe(instance_, kNpEventNames,
+                                    arraysize(kNpEventNames))) {
+      DLOG(ERROR) << "Failed to subscribe to focus events";
+      focus_listener_ = NULL;
+    }
+  }
+}
+
+void ChromeFrameNPAPI::UnsubscribeFromFocusEvents() {
+  if (!focus_listener_.get())
+    return;
+
+  bool ret = focus_listener_->Unsubscribe(instance_, kNpEventNames,
+                                          arraysize(kNpEventNames));
+  DLOG_IF(WARNING, !ret) << "focus_listener_->Unsubscribe failed";
+  focus_listener_ = NULL;
+}
+
+bool ChromeFrameNPAPI::SetWindow(NPWindow* window_info) {
+  if (!window_info || !automation_client_.get()) {
+    NOTREACHED();
+    return false;
+  }
+
+  HWND window = reinterpret_cast<HWND>(window_info->window);
+  if (!::IsWindow(window)) {
+    // No window created yet. Ignore this call.
+    return false;
+  }
+
+  if (IsWindow()) {
+    // We've already subclassed, make sure that SetWindow doesn't get called
+    // with an HWND other than the one we subclassed during our lifetime.
+    DCHECK(window == m_hWnd);
+    return true;
+  }
+
+  automation_client_->SetParentWindow(window);
+
+  SubscribeToFocusEvents();
+
+  if (force_full_page_plugin_) {
+    // By default full page mode is only enabled when the plugin is loaded off
+    // a separate file, i.e. it is the primary content in the window. Even if
+    // we specify the width/height attributes for the plugin as 100% each, FF
+    // instantiates the plugin passing in a width/height of 100px each. To
+    // workaround this we resize the plugin window passed in by FF to the size
+    // of its parent.
+    HWND plugin_parent_window = ::GetParent(window);
+    RECT plugin_parent_rect = {0};
+    ::GetClientRect(plugin_parent_window, &plugin_parent_rect);
+    ::SetWindowPos(window, NULL, plugin_parent_rect.left,
+                   plugin_parent_rect.top,
+                   plugin_parent_rect.right - plugin_parent_rect.left,
+                   plugin_parent_rect.bottom - plugin_parent_rect.top, 0);
+  }
+
+  // Subclass the browser's plugin window here.
+  if (SubclassWindow(window)) {
+    DWORD new_style_flags = WS_CLIPCHILDREN;
+    ModifyStyle(0, new_style_flags, 0);
+
+    if (ready_state_ < READYSTATE_INTERACTIVE) {
+      SetReadyState(READYSTATE_INTERACTIVE);
+    }
+  }
+
+  return true;
+}
+
+void ChromeFrameNPAPI::Print(NPPrint* print_info) {
+  if (!print_info) {
+    NOTREACHED();
+    return;
+  }
+
+  // We dont support full tab mode yet.
+  if (print_info->mode != NP_EMBED) {
+    NOTREACHED();
+    return;
+  }
+
+  NPWindow window = print_info->print.embedPrint.window;
+
+  RECT print_bounds = {0};
+  print_bounds.left = window.x;
+  print_bounds.top = window.y;
+  print_bounds.right = window.x + window.width;
+  print_bounds.bottom = window.x + window.height;
+
+  automation_client_->Print(
+      reinterpret_cast<HDC>(print_info->print.embedPrint.platformPrint),
+      print_bounds);
+}
+
+void ChromeFrameNPAPI::UrlNotify(const char* url, NPReason reason,
+                                 void* notify_data) {
+  if (enabled_popups_) {
+    // We have opened the URL so tell the browser to restore popup settings
+    enabled_popups_ = false;
+    npapi::PopPopupsEnabledState(instance_);
+  }
+
+  // It is now safe to release the additional reference on the request
+  NPAPIUrlRequest* request = RequestFromNotifyData(notify_data);
+  if (request) {
+    request->Stop();
+    request->Release();
+  }
+}
+
+void ChromeFrameNPAPI::OnAcceleratorPressed(int tab_handle,
+                                            const MSG& accel_message) {
+  DLOG(INFO) << __FUNCTION__ << " msg:"
+      << StringPrintf("0x%04X", accel_message.message) << " key:"
+      << accel_message.wParam;
+
+  // The host browser does call TranslateMessage on messages like WM_KEYDOWN
+  // WM_KEYUP, etc, which will result in messages like WM_CHAR, WM_SYSCHAR, etc
+  // being posted to the message queue. We don't post these messages here to
+  // avoid these messages from getting handled twice.
+  if (accel_message.message != WM_CHAR &&
+      accel_message.message != WM_DEADCHAR &&
+      accel_message.message != WM_SYSCHAR &&
+      accel_message.message != WM_SYSDEADCHAR) {
+    // A very primitive way to handle keystrokes.
+    // TODO(tommi): When we've implemented a way for chrome to
+    //  know when keystrokes are handled (deterministically) on that side,
+    //  then this function should get called and not otherwise.
+    ::PostMessage(::GetParent(m_hWnd), accel_message.message,
+                  accel_message.wParam, accel_message.lParam);
+  }
+
+  if (automation_client_.get()) {
+    TabProxy* tab = automation_client_->tab();
+    if (tab) {
+      tab->ProcessUnhandledAccelerator(accel_message);
+    }
+  }
+}
+
+void ChromeFrameNPAPI::OnTabbedOut(int tab_handle, bool reverse) {
+  DLOG(INFO) << __FUNCTION__;
+
+  ignore_setfocus_ = true;
+  HWND parent = ::GetParent(m_hWnd);
+  ::SetFocus(parent);
+
+  INPUT input = {0};
+  input.type = INPUT_KEYBOARD;
+  input.ki.wVk = VK_TAB;
+  SendInput(1, &input, sizeof(input));
+  input.ki.dwFlags = KEYEVENTF_KEYUP;
+  SendInput(1, &input, sizeof(input));
+
+  ignore_setfocus_ = false;
+}
+
+void ChromeFrameNPAPI::OnOpenURL(int tab_handle,
+                                 const GURL& url, int open_disposition) {
+  std::string target;
+  switch (open_disposition) {
+    case NEW_FOREGROUND_TAB:
+      target = "_blank";
+      break;
+    case NEW_BACKGROUND_TAB:
+      target = "_blank";
+      break;
+    case NEW_WINDOW:
+      target = "_new";
+      break;
+    default:
+      break;
+  }
+
+  // Tell the browser to temporarily allow popups
+  enabled_popups_ = true;
+  npapi::PushPopupsEnabledState(instance_, TRUE);
+  npapi::GetURLNotify(instance_, url.spec().c_str(), target.c_str(), NULL);
+}
+
+void ChromeFrameNPAPI::OnRequestStart(int tab_handle, int request_id,
+    const IPC::AutomationURLRequest& request) {
+  scoped_refptr<NPAPIUrlRequest> new_request(new NPAPIUrlRequest(instance_));
+  DCHECK(new_request);
+  if (new_request->Initialize(automation_client_.get(), tab_handle,
+                              request_id, request.url, request.method,
+                              request.referrer, request.extra_request_headers,
+                              request.upload_data.get(), true)) {
+    if (new_request->Start()) {
+      // Keep additional reference on request for NPSTREAM
+      // This will be released in NPP_UrlNotify
+      new_request->AddRef();
+    }
+  }
+}
+
+void ChromeFrameNPAPI::OnRequestRead(int tab_handle, int request_id,
+                                     int bytes_to_read) {
+  automation_client_->ReadRequest(request_id, bytes_to_read);
+}
+
+void ChromeFrameNPAPI::OnRequestEnd(int tab_handle, int request_id,
+                                    const URLRequestStatus& status) {
+  automation_client_->RemoveRequest(request_id, status.status(), true);
+}
+
+void ChromeFrameNPAPI::OnSetCookieAsync(int tab_handle, const GURL& url,
+                                        const std::string& cookie) {
+  // Use the newer NPAPI way if available
+  if (npapi::VersionMinor() >= NPVERS_HAS_URL_AND_AUTH_INFO) {
+    npapi::SetValueForURL(instance_, NPNURLVCookie, url.spec().c_str(),
+                          cookie.c_str(), cookie.length());
+  } else if (url == GURL(document_url_)) {
+    std::string script = "javascript:document.cookie=";
+    script.append(cookie);
+    script.append(1, ';');
+    ExecuteScript(script, NULL);
+  } else {
+    // Third party cookie, use nsICookieService to set the cookie.
+    NOTREACHED();
+  }
+}
+
+bool ChromeFrameNPAPI::HasMethod(NPObject* obj, NPIdentifier name) {
+  for (int i = 0; i < arraysize(plugin_methods_); ++i) {
+    if (name == plugin_method_identifiers_[i])
+      return true;
+  }
+
+  return false;
+}
+
+bool ChromeFrameNPAPI::Invoke(NPObject* header, NPIdentifier name,
+                              const NPVariant* args, uint32_t arg_count,
+                              NPVariant* result) {
+  ChromeFrameNPAPI* plugin_instance = ChromeFrameInstanceFromNPObject(header);
+  if (!plugin_instance && (plugin_instance->automation_client_.get()))
+    return false;
+
+  bool success = false;
+  for (int i = 0; i < arraysize(plugin_methods_); ++i) {
+    if (name == plugin_method_identifiers_[i]) {
+      PluginMethod method = plugin_methods_[i];
+      success = (plugin_instance->*method)(header, args, arg_count, result);
+      break;
+    }
+  }
+
+  return success;
+}
+
+void ChromeFrameNPAPI::InitializeIdentifiers() {
+  npapi::GetStringIdentifiers(plugin_method_identifier_names_,
+                              arraysize(plugin_methods_),
+                              plugin_method_identifiers_);
+
+  npapi::GetStringIdentifiers(plugin_property_identifier_names_,
+                              PLUGIN_PROPERTY_COUNT,
+                              plugin_property_identifiers_);
+}
+
+NPObject* ChromeFrameNPAPI::AllocateObject(NPP instance, NPClass* class_name) {
+  static bool identifiers_initialized = false;
+
+  ChromeFrameNPObject* plugin_object = new ChromeFrameNPObject();
+  DCHECK(plugin_object != NULL);
+
+  plugin_object->chrome_frame_plugin_instance = new ChromeFrameNPAPI();
+  DCHECK(plugin_object->chrome_frame_plugin_instance != NULL);
+
+  plugin_object->npp = NULL;
+
+  COMPILE_ASSERT(arraysize(plugin_method_identifiers_) ==
+                 arraysize(plugin_method_identifier_names_),
+                 method_count_mismatch);
+
+  COMPILE_ASSERT(arraysize(plugin_method_identifiers_) ==
+                 arraysize(plugin_methods_),
+                 method_count_mismatch);
+
+  if (!identifiers_initialized) {
+    InitializeIdentifiers();
+    identifiers_initialized  = true;
+  }
+
+  return reinterpret_cast<NPObject*>(plugin_object);
+}
+
+void ChromeFrameNPAPI::DeallocateObject(NPObject* header) {
+  ChromeFrameNPObject* plugin_object =
+      reinterpret_cast<ChromeFrameNPObject*>(header);
+  DCHECK(plugin_object != NULL);
+
+  if (plugin_object) {
+    delete plugin_object->chrome_frame_plugin_instance;
+    delete plugin_object;
+  }
+}
+
+void ChromeFrameNPAPI::Invalidate(NPObject* header) {
+  DCHECK(header);
+  ChromeFrameNPObject* plugin_object =
+      reinterpret_cast<ChromeFrameNPObject*>(header);
+  if (plugin_object) {
+    DCHECK(plugin_object->chrome_frame_plugin_instance);
+    plugin_object->chrome_frame_plugin_instance->Uninitialize();
+  }
+}
+
+ChromeFrameNPAPI* ChromeFrameNPAPI::ChromeFrameInstanceFromPluginInstance(
+    NPP instance) {
+  if ((instance == NULL) || (instance->pdata == NULL)) {
+    NOTREACHED();
+    return NULL;
+  }
+
+  return ChromeFrameInstanceFromNPObject(instance->pdata);
+}
+
+ChromeFrameNPAPI* ChromeFrameNPAPI::ChromeFrameInstanceFromNPObject(
+    void* object) {
+  ChromeFrameNPObject* plugin_object =
+      reinterpret_cast<ChromeFrameNPObject*>(object);
+  if (!plugin_object) {
+    NOTREACHED();
+    return NULL;
+  }
+
+  DCHECK(plugin_object->chrome_frame_plugin_instance);
+  return plugin_object->chrome_frame_plugin_instance;
+}
+
+bool ChromeFrameNPAPI::HasProperty(NPObject* obj, NPIdentifier name) {
+  for (int i = 0; i < PLUGIN_PROPERTY_COUNT; ++i) {
+    if (name == plugin_property_identifiers_[i])
+      return true;
+  }
+  return false;
+}
+
+bool ChromeFrameNPAPI::GetProperty(NPIdentifier name,
+                                   NPVariant* variant) {
+  if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_ONERROR]) {
+    if (onerror_handler_) {
+      variant->type = NPVariantType_Object;
+      variant->value.objectValue = onerror_handler_.Copy();
+      return true;
+    }
+  } else if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_ONMESSAGE]) {
+    if (onmessage_handler_) {
+      variant->type = NPVariantType_Object;
+      variant->value.objectValue = onmessage_handler_.Copy();
+      return true;
+    }
+  } else if (name ==
+             plugin_property_identifiers_[PLUGIN_PROPERTY_ONPRIVATEMESSAGE]) {
+    if (!is_privileged_) {
+      DLOG(WARNING) << "Attempt to read onprivatemessage property while not "
+                       "privileged";
+    } else {
+      if (onprivatemessage_handler_) {
+        variant->type = NPVariantType_Object;
+        variant->value.objectValue =
+            onprivatemessage_handler_.Copy();
+        return true;
+      }
+    }
+  } else if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_SRC]) {
+    AllocateStringVariant(src_, variant);
+    return true;
+  } else if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_VERSION]) {
+    const std::wstring version =
+        automation_client_->GetVersion();
+    AllocateStringVariant(WideToUTF8(version), variant);
+    return true;
+  } else if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_READYSTATE]) {
+    INT32_TO_NPVARIANT(ready_state_, *variant);
+    return true;
+  } else if (name ==
+        plugin_property_identifiers_[PLUGIN_PROPERTY_USECHROMENETWORK]) {
+    BOOLEAN_TO_NPVARIANT(automation_client_->use_chrome_network(), *variant);
+    return true;
+  }
+
+  return false;
+}
+
+bool ChromeFrameNPAPI::GetProperty(NPObject* object, NPIdentifier name,
+                                   NPVariant* variant) {
+  if (!object || !variant) {
+    NOTREACHED();
+    return false;
+  }
+
+  ChromeFrameNPAPI* plugin_instance = ChromeFrameInstanceFromNPObject(object);
+  if (!plugin_instance) {
+    NOTREACHED();
+    return false;
+  }
+
+  return plugin_instance->GetProperty(name, variant);
+}
+
+bool ChromeFrameNPAPI::SetProperty(NPIdentifier name,
+                                   const NPVariant* variant) {
+  if (NPVARIANT_IS_OBJECT(*variant)) {
+    if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_ONERROR]) {
+      onerror_handler_.Free();
+      onerror_handler_ = variant->value.objectValue;
+      return true;
+    } else if (
+        name == plugin_property_identifiers_[PLUGIN_PROPERTY_ONMESSAGE]) {
+      onmessage_handler_.Free();
+      onmessage_handler_ = variant->value.objectValue;
+      return true;
+    } else if (name ==
+              plugin_property_identifiers_[PLUGIN_PROPERTY_ONPRIVATEMESSAGE]) {
+      if (!is_privileged_) {
+        DLOG(WARNING) << "Attempt to set onprivatemessage while not privileged";
+      } else {
+        onprivatemessage_handler_.Free();
+        onprivatemessage_handler_ = variant->value.objectValue;
+        return true;
+      }
+    }
+  } else if (NPVARIANT_IS_STRING(*variant) || NPVARIANT_IS_NULL(*variant)) {
+    if (name == plugin_property_identifiers_[PLUGIN_PROPERTY_SRC]) {
+      return NavigateToURL(variant, 1, NULL);
+    }
+  } else if (NPVARIANT_IS_BOOLEAN(*variant)) {
+    if (name ==
+        plugin_property_identifiers_[PLUGIN_PROPERTY_USECHROMENETWORK]) {
+      automation_client_->set_use_chrome_network(
+          NPVARIANT_TO_BOOLEAN(*variant));
+    }
+  }
+
+  return false;
+}
+
+bool ChromeFrameNPAPI::SetProperty(NPObject* object, NPIdentifier name,
+                                   const NPVariant* variant) {
+  if (!object || !variant) {
+    DLOG(ERROR) << "Cannot set property: " << npapi::StringFromIdentifier(name);
+    return false;
+  }
+
+  ChromeFrameNPAPI* plugin_instance = ChromeFrameInstanceFromNPObject(object);
+  if (!plugin_instance) {
+    NOTREACHED();
+    return false;
+  }
+
+  return plugin_instance->SetProperty(name, variant);
+}
+
+void ChromeFrameNPAPI::OnFocus() {
+  DLOG(INFO) << __FUNCTION__;
+  PostMessage(WM_SETFOCUS, 0, 0);
+}
+
+void ChromeFrameNPAPI::OnEvent(const char* event_name) {
+  DCHECK(event_name);
+  DLOG(INFO) << event_name;
+
+  if (lstrcmpiA(event_name, "focus") == 0) {
+    OnFocus();
+  } else if (lstrcmpiA(event_name, "blur") == 0) {
+    OnBlur();
+  } else {
+    NOTREACHED() << event_name;
+  }
+}
+
+LRESULT CALLBACK ChromeFrameNPAPI::DropKillFocusHook(int code, WPARAM wparam,
+                                                     LPARAM lparam) {
+  LRESULT ret = 0;
+  CWPSTRUCT* wp = reinterpret_cast<CWPSTRUCT*>(lparam);
+  if ((code < 0) || (wp->message != WM_KILLFOCUS))
+    ret = ::CallNextHookEx(NULL, code, wparam, lparam);
+
+  return ret;
+}
+
+LRESULT ChromeFrameNPAPI::OnSetFocus(UINT message, WPARAM wparam,
+                                     LPARAM lparam, BOOL& handled) {  // NO_LINT
+  // Opera has a WH_CALLWNDPROC hook that handles WM_KILLFOCUS and
+  // prevents us from setting the focus to the tab.
+  // To work around that, we set a temporary hook here that does nothing
+  // (not even call other hooks) when it sees WM_KILLFOCUS.
+  HHOOK hook = NULL;
+  hook = ::SetWindowsHookEx(WH_CALLWNDPROC, DropKillFocusHook, NULL,
+                            ::GetCurrentThreadId());
+  // Since we chain message maps, make sure we are not calling base class
+  // twice for WM_SETFOCUS.
+  BOOL handled_by_base = TRUE;
+  LRESULT ret = Base::OnSetFocus(message, wparam, lparam, handled_by_base);
+  if (hook)
+    ::UnhookWindowsHookEx(hook);
+
+  return ret;
+}
+
+void ChromeFrameNPAPI::OnBlur() {
+  DLOG(INFO) << __FUNCTION__;
+}
+
+void ChromeFrameNPAPI::OnLoad(int, const GURL& gurl) {
+  DLOG(INFO) << "Firing onload";
+  FireEvent("load", gurl.spec());
+}
+
+void ChromeFrameNPAPI::OnLoadFailed(int error_code, const std::string& url) {
+  FireEvent("loaderror", url);
+
+  ScopedNpVariant result;
+  InvokeDefault(onerror_handler_, url, &result);
+}
+
+void ChromeFrameNPAPI::OnMessageFromChromeFrame(int tab_handle,
+                                                const std::string& message,
+                                                const std::string& origin,
+                                                const std::string& target) {
+  bool private_message = false;
+  if (target.compare("*") != 0) {
+    if (is_privileged_) {
+      private_message = true;
+    } else {
+      if (!HaveSameOrigin(target, document_url_)) {
+        DLOG(WARNING) << "Dropping posted message since target doesn't match "
+            "the current document's origin. target=" << target;
+        return;
+      }
+    }
+  }
+
+  // Create a MessageEvent object that contains the message and origin
+  // as well as supporting other MessageEvent (see the HTML5 spec) properties.
+  // Then call the onmessage handler.
+  ScopedNpObject<NPObject> event;
+  bool ok = CreateMessageEvent(false, true, message, origin, event.Receive());
+  if (ok) {
+    // Don't call FireEvent here (or we'll have an event wrapped by an event).
+    DispatchEvent(event);
+
+    ScopedNpVariant result;
+    NPVariant params[2];
+    OBJECT_TO_NPVARIANT(event, params[0]);
+    bool invoke = false;
+    if (private_message) {
+      DCHECK(is_privileged_);
+      STRINGN_TO_NPVARIANT(target.c_str(), target.length(), params[1]);
+      invoke = InvokeDefault(onprivatemessage_handler_,
+                             arraysize(params),
+                             params,
+                             &result);
+    } else {
+      invoke = InvokeDefault(onmessage_handler_, params[0], &result);
+    }
+    DLOG_IF(WARNING, !invoke) << "InvokeDefault failed";
+  } else {
+    NOTREACHED() << "CreateMessageEvent";
+  }
+}
+
+void ChromeFrameNPAPI::OnAutomationServerReady() {
+  Base::OnAutomationServerReady();
+
+  std::string proxy_settings;
+  bool has_prefs = pref_service_->Initialize(instance_,
+                                             automation_client_.get());
+  if (has_prefs && pref_service_->GetProxyValueJSONString(&proxy_settings)) {
+    automation_client_->SetProxySettings(proxy_settings);
+  }
+
+  if (!src_.empty()) {
+    if (!automation_client_->InitiateNavigation(src_)) {
+      DLOG(ERROR) << "Failed to navigate to: " << src_;
+      src_.clear();
+    }
+  }
+
+  SetReadyState(READYSTATE_COMPLETE);
+}
+
+void ChromeFrameNPAPI::OnAutomationServerLaunchFailed(
+    AutomationLaunchResult reason, const std::string& server_version) {
+  SetReadyState(READYSTATE_UNINITIALIZED);
+
+  if (reason == AUTOMATION_VERSION_MISMATCH) {
+    DisplayVersionMismatchWarning(m_hWnd, server_version);
+  }
+}
+
+bool ChromeFrameNPAPI::InvokeDefault(NPObject* object,
+                                     unsigned param_count,
+                                     const NPVariant* params,
+                                     NPVariant* result) {
+  if (!object)
+    return false;
+
+  bool ret = npapi::InvokeDefault(instance_, object, params, param_count,
+                                  result);
+  // InvokeDefault can return false in FF even though we do see the call
+  // go through.  It's not clear to me what the circumstances are, so
+  // we log it as a warning while tracking it down.
+  DLOG_IF(WARNING, !ret) << "npapi::InvokeDefault failed";
+  return ret;
+}
+
+bool ChromeFrameNPAPI::InvokeDefault(NPObject* object, const std::string& param,
+                                     NPVariant* result) {
+  NPVariant arg;
+  STRINGN_TO_NPVARIANT(param.c_str(), param.length(), arg);
+  return InvokeDefault(object, arg, result);
+}
+
+bool ChromeFrameNPAPI::InvokeDefault(NPObject* object, const NPVariant& param,
+                                     NPVariant* result) {
+  return InvokeDefault(object, 1, &param, result);
+}
+
+bool ChromeFrameNPAPI::CreateEvent(const std::string& type, bool bubbles,
+                                   bool cancelable, NPObject** basic_event) {
+  DCHECK(basic_event);
+  NPObject* window = GetWindowObject();
+  if (!window) {
+    // Can fail if the browser is closing (seen in Opera).
+    return false;
+  }
+
+  const char* identifier_names[] = {
+    "document",
+    "createEvent",
+    "initEvent",
+  };
+
+  NPIdentifier identifiers[arraysize(identifier_names)];
+  npapi::GetStringIdentifiers(identifier_names, arraysize(identifier_names),
+                              identifiers);
+
+  // Fetch the document object from the window.
+  ScopedNpVariant document;
+  bool ok = npapi::GetProperty(instance_, window, identifiers[0], &document);
+  if (!ok) {
+    // This could happen if the page is being unloaded.
+    DLOG(WARNING) << "Failed to fetch the document object";
+    return false;
+  }
+
+  bool success = false;
+  if (ok && NPVARIANT_IS_OBJECT(document)) {
+    // Call document.createEvent("Event") to create a basic event object.
+    NPVariant event_type;
+    STRINGN_TO_NPVARIANT("Event", sizeof("Event") - 1, event_type);
+    ScopedNpVariant result;
+    success = npapi::Invoke(instance_, NPVARIANT_TO_OBJECT(document),
+                            identifiers[1], &event_type, 1, &result);
+    if (!NPVARIANT_IS_OBJECT(result)) {
+      DLOG(WARNING) << "Failed to invoke createEvent";
+      success = false;
+    } else {
+      NPVariant init_args[3];
+      STRINGN_TO_NPVARIANT(type.c_str(), type.length(), init_args[0]);
+      BOOLEAN_TO_NPVARIANT(bubbles, init_args[1]);
+      BOOLEAN_TO_NPVARIANT(cancelable, init_args[2]);
+
+      // Now initialize the event object by calling
+      // event.initEvent(type, bubbles, cancelable);
+      ScopedNpVariant init_results;
+      ok = npapi::Invoke(instance_, NPVARIANT_TO_OBJECT(result), identifiers[2],
+                         init_args, arraysize(init_args), &init_results);
+      if (ok) {
+        success = true;
+        // Finally, pass the ownership to the caller.
+        *basic_event = NPVARIANT_TO_OBJECT(result);
+        VOID_TO_NPVARIANT(result);  // Prevent the object from being released.
+      } else {
+        DLOG(ERROR) << "initEvent failed";
+        success = false;
+      }
+    }
+  }
+
+  return success;
+}
+
+bool ChromeFrameNPAPI::CreateMessageEvent(bool bubbles, bool cancelable,
+                                          const std::string& data,
+                                          const std::string& origin,
+                                          NPObject** message_event) {
+  DCHECK(message_event);
+  ScopedNpObject<NPObject> event;
+  bool ok = CreateEvent("message", false, true, event.Receive());
+  if (ok) {
+    typedef enum {
+      DATA,
+      ORIGIN,
+      LAST_EVENT_ID,
+      SOURCE,
+      MESSAGE_PORT,
+      IDENTIFIER_COUNT,  // Must be last.
+    } StringIdentifiers;
+
+    static NPIdentifier identifiers[IDENTIFIER_COUNT] = {0};
+    if (!identifiers[0]) {
+      const NPUTF8* identifier_names[] = {
+        "data",
+        "origin",
+        "lastEventId",
+        "source",
+        "messagePort",
+      };
+      COMPILE_ASSERT(arraysize(identifier_names) == arraysize(identifiers),
+                     mismatched_array_size);
+      npapi::GetStringIdentifiers(identifier_names, IDENTIFIER_COUNT,
+                                  identifiers);
+    }
+
+    NPVariant arg;
+    STRINGN_TO_NPVARIANT(data.c_str(), data.length(), arg);
+    npapi::SetProperty(instance_, event, identifiers[DATA], &arg);
+    STRINGN_TO_NPVARIANT(origin.c_str(), origin.length(), arg);
+    npapi::SetProperty(instance_, event, identifiers[ORIGIN], &arg);
+    STRINGN_TO_NPVARIANT("", 0, arg);
+    npapi::SetProperty(instance_, event, identifiers[LAST_EVENT_ID], &arg);
+    NULL_TO_NPVARIANT(arg);
+    npapi::SetProperty(instance_, event, identifiers[SOURCE], &arg);
+    npapi::SetProperty(instance_, event, identifiers[MESSAGE_PORT], &arg);
+    *message_event = event.Detach();
+  }
+
+  return ok;
+}
+
+
+void ChromeFrameNPAPI::DispatchEvent(NPObject* event) {
+  DCHECK(event != NULL);
+
+  ScopedNpObject<NPObject> embed;
+  npapi::GetValue(instance_, NPNVPluginElementNPObject, &embed);
+  if (embed != NULL) {
+    NPVariant param;
+    OBJECT_TO_NPVARIANT(event, param);
+    ScopedNpVariant result;
+    bool invoke = npapi::Invoke(instance_, embed,
+        npapi::GetStringIdentifier("dispatchEvent"), &param, 1, &result);
+    DLOG_IF(WARNING, !invoke) << "dispatchEvent failed";
+  } else {
+    NOTREACHED() << "NPNVPluginElementNPObject";
+  }
+}
+
+bool ChromeFrameNPAPI::ExecuteScript(const std::string& script,
+                                     NPVariant* result) {
+  NPObject* window = GetWindowObject();
+  if (!window) {
+    NOTREACHED();
+    return false;
+  }
+
+  NPString script_for_execution;
+  script_for_execution.UTF8Characters = script.c_str();
+  script_for_execution.UTF8Length = script.length();
+
+  return npapi::Evaluate(instance_, window, &script_for_execution, result);
+}
+
+NPObject* ChromeFrameNPAPI::JavascriptToNPObject(const std::string& script) {
+  // Convert the passed in script to an invocable NPObject
+  // To achieve this we save away the function in a dummy window property
+  // which is then read to get the script object representing the function.
+
+  std::string script_code =
+      "javascript:window.__cf_get_function_object =";
+
+  // If we are able to look up the name in the javascript namespace, then it
+  // means that the caller passed in a function name. Convert the function
+  // name to a NPObject we can invoke on.
+  if (IsValidJavascriptFunction(script)) {
+    script_code += script;
+  } else {
+    script_code += "new Function(\"";
+    script_code += script;
+    script_code += "\");";
+  }
+
+  NPVariant result;
+  if (!ExecuteScript(script_code, &result)) {
+    NOTREACHED();
+    return NULL;
+  }
+
+  DCHECK(result.type == NPVariantType_Object);
+  DCHECK(result.value.objectValue != NULL);
+  return result.value.objectValue;
+}
+
+bool ChromeFrameNPAPI::IsValidJavascriptFunction(const std::string& script) {
+  std::string script_code = "javascript:window['";
+  script_code += script;
+  script_code += "'];";
+
+  ScopedNpVariant result;
+  if (!ExecuteScript(script_code, &result)) {
+    NOTREACHED();
+    return NULL;
+  }
+
+  return result.type == NPVariantType_Object;
+}
+
+bool ChromeFrameNPAPI::NavigateToURL(const NPVariant* args, uint32_t arg_count,
+                                     NPVariant* result) {
+  // Note that 'result' might be NULL.
+  if (arg_count != 1 || !(NPVARIANT_IS_STRING(args[0]) ||
+                          NPVARIANT_IS_NULL(args[0]))) {
+    NOTREACHED();
+    return false;
+  }
+
+  if (ready_state_ == READYSTATE_UNINITIALIZED) {
+    // Error(L"Chrome Frame failed to initialize.");
+    // TODO(tommi): call NPN_SetException
+    DLOG(WARNING) << "NavigateToURL called after failed initialization";
+    return false;
+  }
+
+  std::string url("about:blank");
+
+  if (!NPVARIANT_IS_NULL(args[0])) {
+    const NPString& str = args[0].value.stringValue;
+    if (str.UTF8Length) {
+      url.assign(std::string(str.UTF8Characters, str.UTF8Length));
+    }
+  }
+  DLOG(WARNING) << __FUNCTION__ << " " << url;
+  std::string full_url = ResolveURL(GetDocumentUrl(), url);
+  if (full_url.empty())
+    return false;
+
+  src_ = full_url;
+  // Navigate only if we completed initialization i.e. proxy is set etc.
+  if (ready_state_ == READYSTATE_COMPLETE) {
+    if (!automation_client_->InitiateNavigation(full_url)) {
+      // TODO(tommi): call NPN_SetException.
+      src_.clear();
+      return false;
+    }
+  }
+  return true;
+}
+
+bool ChromeFrameNPAPI::postMessage(NPObject* npobject, const NPVariant* args,
+                                   uint32_t arg_count, NPVariant* result) {
+  if (arg_count < 1 || arg_count > 2 || !NPVARIANT_IS_STRING(args[0])) {
+    NOTREACHED();
+    return false;
+  }
+
+  const NPString& str = args[0].value.stringValue;
+  std::string message(str.UTF8Characters, str.UTF8Length);
+  std::string target;
+  if (arg_count == 2 && NPVARIANT_IS_STRING(args[1])) {
+    const NPString& str = args[1].value.stringValue;
+    target.assign(str.UTF8Characters, str.UTF8Length);
+    if (target.compare("*") != 0) {
+      GURL resolved(target);
+      if (!resolved.is_valid()) {
+        npapi::SetException(npobject,
+                            "Unable to parse the specified target URL.");
+        return false;
+      }
+      target = resolved.spec();
+    }
+  } else {
+    target = "*";
+  }
+
+  GURL url(GURL(document_url_).GetOrigin());
+  std::string origin(url.is_empty() ? "null" : url.spec());
+
+  automation_client_->ForwardMessageFromExternalHost(message, origin, target);
+
+  return true;
+}
+
+bool ChromeFrameNPAPI::postPrivateMessage(NPObject* npobject,
+                                          const NPVariant* args,
+                                          uint32_t arg_count,
+                                          NPVariant* result) {
+  if (!is_privileged_) {
+    DLOG(WARNING) << "postPrivateMessage invoked in non-privileged mode";
+    return false;
+  }
+
+  if (arg_count != 3 || !NPVARIANT_IS_STRING(args[0]) ||
+      !NPVARIANT_IS_STRING(args[1]) || !NPVARIANT_IS_STRING(args[2])) {
+    NOTREACHED();
+    return false;
+  }
+
+  const NPString& message_str = args[0].value.stringValue;
+  const NPString& origin_str = args[1].value.stringValue;
+  const NPString& target_str = args[2].value.stringValue;
+  std::string message(message_str.UTF8Characters, message_str.UTF8Length);
+  std::string origin(origin_str.UTF8Characters, origin_str.UTF8Length);
+  std::string target(target_str.UTF8Characters, target_str.UTF8Length);
+
+  automation_client_->ForwardMessageFromExternalHost(message, origin, target);
+
+  return true;
+}
+
+void ChromeFrameNPAPI::FireEvent(const std::string& event_type,
+                                 const std::string& data) {
+  NPVariant arg;
+  STRINGN_TO_NPVARIANT(data.c_str(), data.length(), arg);
+  FireEvent(event_type, arg);
+}
+
+void ChromeFrameNPAPI::FireEvent(const std::string& event_type,
+                                 const NPVariant& data) {
+  // Check that we're not bundling an event inside an event.
+  // Right now we're only expecting simple types for the data argument.
+  DCHECK(NPVARIANT_IS_OBJECT(data) == false);
+
+  ScopedNpObject<NPObject> ev;
+  CreateEvent(event_type, false, false, ev.Receive());
+  if (ev) {
+    // Add the 'data' member to the event.
+    bool set = npapi::SetProperty(instance_, ev,
+        npapi::GetStringIdentifier("data"), const_cast<NPVariant*>(&data));
+    DCHECK(set);
+    DispatchEvent(ev);
+  }
+}
+
+NpProxyService* ChromeFrameNPAPI::CreatePrefService() {
+  return new NpProxyService;
+}
+
+NPObject* ChromeFrameNPAPI::GetWindowObject() const {
+  if (!window_object_.get()) {
+    NPError ret = npapi::GetValue(instance_, NPNVWindowNPObject,
+        window_object_.Receive());
+    DLOG_IF(ERROR, ret != NPERR_NO_ERROR) << "NPNVWindowNPObject failed";
+  }
+  return window_object_;
+}
+
+bool ChromeFrameNPAPI::GetBrowserIncognitoMode() {
+  bool incognito_mode = false;
+
+  // Check disabled for Opera due to bug: http://b/issue?id=1815494
+  if (GetBrowserType() != BROWSER_OPERA) {
+    // Check whether host browser is in private mode;
+    NPBool private_mode = FALSE;
+    NPError err = npapi::GetValue(instance_,
+                                  NPNVprivateModeBool,
+                                  &private_mode);
+    if (err == NPERR_NO_ERROR && private_mode) {
+      incognito_mode = true;
+    }
+  } else {
+    DLOG(WARNING) << "Not checking for private mode in Opera";
+  }
+
+  return incognito_mode;
+}
+
+NPAPIUrlRequest* ChromeFrameNPAPI::ValidateRequest(
+    NPP instance, void* notify_data) {
+  ChromeFrameNPAPI* plugin_instance =
+      ChromeFrameNPAPI::ChromeFrameInstanceFromPluginInstance(instance);
+  if (plugin_instance) {
+    return plugin_instance->RequestFromNotifyData(notify_data);
+  }
+
+  return NULL;
+}
+
+NPAPIUrlRequest* ChromeFrameNPAPI::RequestFromNotifyData(
+    void* notify_data) const {
+  NPAPIUrlRequest* request = reinterpret_cast<NPAPIUrlRequest*>(notify_data);
+  DCHECK(request ? automation_client_->IsValidRequest(request) : 1);
+  return request;
+}
+
+bool ChromeFrameNPAPI::HandleContextMenuCommand(UINT cmd) {
+  if (cmd == IDC_ABOUT_CHROME_FRAME) {
+    // TODO: implement "About Chrome Frame"
+  }
+  return false;
+}