Land http://codereview.chromium.org/159067:

chrome/browser/extensions/extension_host.cc

 // Copyright (c) 2006-2009 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/browser/extensions/extension_host.h"
 
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/string_util.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/debugger/devtools_manager.h"
 #include "chrome/browser/extensions/extension_message_service.h"
+#include "chrome/browser/extensions/extension_tabs_module.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/browser/renderer_host/render_process_host.h"
 #include "chrome/browser/renderer_host/render_widget_host.h"
 #include "chrome/browser/renderer_host/render_widget_host_view.h"
 #include "chrome/browser/renderer_host/site_instance.h"
 #include "chrome/browser/tab_contents/infobar_delegate.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/tab_contents/tab_contents_view.h"
 #include "chrome/common/bindings_policy.h"
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/notification_service.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/pref_service.h"
+#include "chrome/common/view_types.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/url_constants.h"
 
 #include "grit/browser_resources.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
 
 #include "webkit/glue/context_menu.h"
 
 namespace {
@@ skipping 39 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(CrashedExtensionInfobarDelegate);
 };
 
 }  // namespace
 
 
 // static
 bool ExtensionHost::enable_dom_automation_ = false;
 
 ExtensionHost::ExtensionHost(Extension* extension, SiteInstance* site_instance,
-                             const GURL& url)
+                             const GURL& url, ViewType::Type host_type)
     : extension_(extension),
       profile_(site_instance->browsing_instance()->profile()),
       did_stop_loading_(false),
       document_element_available_(false),
-      url_(url) {
+      url_(url),
+      extension_host_type_(host_type) {
   render_view_host_ = new RenderViewHost(
       site_instance, this, MSG_ROUTING_NONE, NULL);
   render_view_host_->AllowBindings(BindingsPolicy::EXTENSION);
   if (enable_dom_automation_)
     render_view_host_->AllowBindings(BindingsPolicy::DOM_AUTOMATION);
 }
 
 ExtensionHost::~ExtensionHost() {
   NotificationService::current()->Notify(
       NotificationType::EXTENSION_HOST_DESTROYED,
@@ skipping 275 matching lines @@
       render_view_host()->process()->profile());
   // NOTE(rafaelw): This can return NULL in some circumstances. In particular,
   // a toolstrip or background_page onload chrome.tabs api call can make it
   // into here before the browser is sufficiently initialized to return here.
   // A similar situation may arise during shutdown.
   // TODO(rafaelw): Delay creation of background_page until the browser
   // is available. http://code.google.com/p/chromium/issues/detail?id=13284
   return browser;
 }
 
+ViewType::Type ExtensionHost::GetRenderViewType() const {
+  return extension_host_type_;
+}
+
 void ExtensionHost::RenderViewCreated(RenderViewHost* render_view_host) {
   // TODO(mpcomplete): This is duplicated in DidNavigate, which means that
   // we'll create 2 EFDs for the first navigation. We should try to find a
   // better way to unify them.
   // See http://code.google.com/p/chromium/issues/detail?id=18240
   extension_function_dispatcher_.reset(
       new ExtensionFunctionDispatcher(render_view_host, this, url_));
 }
+
+int ExtensionHost::GetBrowserWindowID() const {
+  int window_id = -1;
+  if (extension_host_type_ == ViewType::EXTENSION_TOOLSTRIP) {
+    window_id = ExtensionTabUtil::GetWindowId(
+        const_cast<ExtensionHost* >(this)->GetBrowser());
+  } else if (extension_host_type_ == ViewType::EXTENSION_BACKGROUND_PAGE) {
+    // Background page is not attached to any browser window, so pass -1.
+    window_id = -1;
+  } else {
+    NOTREACHED();
+  }
+  return window_id;
+}