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

chrome/browser/extensions/extension_browsertests_misc.cc

 // 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 "base/ref_counted.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_list.h"
 #include "chrome/browser/renderer_host/render_view_host.h"
 #include "chrome/browser/extensions/extension_browsertest.h"
 #include "chrome/browser/extensions/extension_host.h"
@@ skipping 30 matching lines @@
   return host;
 }
 
 // Tests that toolstrips initializes properly and can run basic extension js.
 IN_PROC_BROWSER_TEST_F(ExtensionBrowserTest, Toolstrip) {
   FilePath extension_test_data_dir = test_data_dir_.AppendASCII("good").
       AppendASCII("Extensions").AppendASCII("behllobkkfkfnphdnhnkndlbkcpglgmj").
       AppendASCII("1.0.0.0");
   ASSERT_TRUE(LoadExtension(extension_test_data_dir));
 
-  // At this point, there should be two ExtensionHosts loaded because this
-  // extension has two toolstrips. Find the one that is hosting toolstrip1.html.
+  // At this point, there should be three ExtensionHosts loaded because this
+  // extension has two toolstrips and one background page. Find the one that is
+  // hosting toolstrip1.html.
   ExtensionProcessManager* manager =
       browser()->profile()->GetExtensionProcessManager();
-  ExtensionHost* host = FindHostWithPath(manager, "/toolstrip1.html", 2);
+  ExtensionHost* host = FindHostWithPath(manager, "/toolstrip1.html", 3);
 
   // Tell it to run some JavaScript that tests that basic extension code works.
   bool result = false;
   ui_test_utils::ExecuteJavaScriptAndExtractBool(
       host->render_view_host(), L"", L"testTabsAPI()", &result);
   EXPECT_TRUE(result);
 
 #if defined(OS_WIN)
   // Test for compact language detection API. First navigate to a (static) html
   // file with a French sentence. Then, run the test API in toolstrip1.html to
   // actually call the language detection API through the existing extension,
   // and verify that the language returned is indeed French.
   FilePath language_url = extension_test_data_dir.AppendASCII(
       "french_sentence.html");
   ui_test_utils::NavigateToURL(
       browser(),
       GURL(language_url.ToWStringHack()));
 
   ui_test_utils::ExecuteJavaScriptAndExtractBool(
       host->render_view_host(), L"", L"testTabsLanguageAPI()", &result);
   EXPECT_TRUE(result);
 #endif
 }
 
+IN_PROC_BROWSER_TEST_F(ExtensionBrowserTest, ExtensionViews) {
+  FilePath extension_test_data_dir = test_data_dir_.AppendASCII("good").
+      AppendASCII("Extensions").AppendASCII("behllobkkfkfnphdnhnkndlbkcpglgmj").
+      AppendASCII("1.0.0.0");
+  ASSERT_TRUE(LoadExtension(extension_test_data_dir));
+
+  // At this point, there should be three ExtensionHosts loaded because this
+  // extension has two toolstrips and one background page. Find the one that is
+  // hosting toolstrip1.html.
+  ExtensionProcessManager* manager =
+      browser()->profile()->GetExtensionProcessManager();
+  ExtensionHost* host = FindHostWithPath(manager, "/toolstrip1.html", 3);
+
+  FilePath gettabs_url = extension_test_data_dir.AppendASCII(
+      "test_gettabs.html");
+  ui_test_utils::NavigateToURL(
+      browser(),
+      GURL(gettabs_url.ToWStringHack()));
+
+  bool result = false;
+  ui_test_utils::ExecuteJavaScriptAndExtractBool(
+      host->render_view_host(), L"", L"testgetToolstripsAPI()", &result);
+  EXPECT_TRUE(result);
+
+  result = false;
+  ui_test_utils::ExecuteJavaScriptAndExtractBool(
+      host->render_view_host(), L"", L"testgetBackgroundPageAPI()", &result);
+  EXPECT_TRUE(result);
+
+  ui_test_utils::NavigateToURL(
+      browser(),
+      GURL("chrome-extension://behllobkkfkfnphdnhnkndlbkcpglgmj/"
+           "test_gettabs.html"));
+  result = false;
+  ui_test_utils::ExecuteJavaScriptAndExtractBool(
+      host->render_view_host(), L"", L"testgetTabContentsesAPI()", &result);
+  EXPECT_TRUE(result);
+}
+
 // Tests that the ExtensionShelf initializes properly, notices that
 // an extension loaded and has a view available, and then sets that up
 // properly.
 IN_PROC_BROWSER_TEST_F(ExtensionBrowserTest, Shelf) {
   // When initialized, there are no extension views and the preferred height
   // should be zero.
   BrowserView* browser_view = static_cast<BrowserView*>(browser()->window());
   ExtensionShelf* shelf = browser_view->extension_shelf();
   ASSERT_TRUE(shelf);
   EXPECT_EQ(shelf->GetChildViewCount(), 0);
@@ skipping 277 matching lines @@
   ui_test_utils::ExecuteJavaScriptAndExtractBool(
       host->render_view_host(), L"", L"testDisconnect()", &result);
   EXPECT_TRUE(result);
 
   // Test disconnect is fired on tab close.
   result = false;
   ui_test_utils::ExecuteJavaScriptAndExtractBool(
       host->render_view_host(), L"", L"testDisconnectOnClose()", &result);
   EXPECT_TRUE(result);
 }