Add navigator.doNotTrack property

chrome/browser/do_not_track_browsertest.cc

 // Copyright (c) 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 "base/string16.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/test/base/in_process_browser_test.h"
 #include "chrome/test/base/ui_test_utils.h"
+#include "content/public/browser/web_contents.h"
+#include "content/public/test/browser_test_utils.h"
 
 typedef InProcessBrowserTest DoNotTrackTest;
 
 // Check that the DNT header is sent when the corresponding preference is set.
 IN_PROC_BROWSER_TEST_F(DoNotTrackTest, Simple) {
   ASSERT_TRUE(test_server()->Start());
 
   PrefService* prefs = browser()->profile()->GetPrefs();
   prefs->SetBoolean(prefs::kEnableDoNotTrack, true);
 
@@ skipping 22 matching lines @@
   ui_test_utils::NavigateToURL(browser(), url);
 
   int matches = ui_test_utils::FindInPage(
       chrome::GetActiveTabContents(browser()),
       string16(ASCIIToUTF16("1")),
       true /* forward */, false /* match case */, NULL /* ordinal */,
       NULL /* selection_rect */);
 
   EXPECT_EQ(1, matches);
 }
+
+// Check that the DOM property is set when the corresponding preference is set.
+IN_PROC_BROWSER_TEST_F(DoNotTrackTest, DOMProperty) {
+  PrefService* prefs = browser()->profile()->GetPrefs();
+  prefs->SetBoolean(prefs::kEnableDoNotTrack, true);
+
+  ASSERT_NO_FATAL_FAILURE(content::WaitForLoadStop(
+      chrome::GetActiveWebContents(browser())));
+
+  std::string do_not_track;
+  EXPECT_TRUE(content::ExecuteJavaScriptAndExtractString(
+      chrome::GetActiveWebContents(browser())->GetRenderViewHost(),
+      std::wstring(),
+      L"window.domAutomationController.send(navigator.doNotTrack)",
+      &do_not_track));
+  EXPECT_EQ("1", do_not_track);
+
+  // Reset flag and check that the changed value is propagated to the existing
+  // renderer.
+  prefs->SetBoolean(prefs::kEnableDoNotTrack, false);
+
+  EXPECT_TRUE(content::ExecuteJavaScriptAndExtractString(
+      chrome::GetActiveWebContents(browser())->GetRenderViewHost(),
+      std::wstring(),
+      L"window.domAutomationController.send("
+      L"navigator.doNotTrack === null ? '0' : '1')",
+      &do_not_track));
+  EXPECT_EQ("0", do_not_track);
+}