Disable incognito link if parental control is on

The CL disables the incognito link on the gaia page if parental control is on. It adds a cached version for windows parental control check so that it may be accessed from IO thread. A similar CL for thread-safe android parental control check is under review at https://chrome-internal-review.googlesource.com/#/c/166265/.

BUG=383682

Review URL: https://codereview.chromium.org/336213005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@278848 0039d316-1c4b-4281-b951-d872f2087c98

4 files changed, 41 insertions, 2 deletions

diff --git a/chrome/browser/chrome_browser_main_win.cc b/chrome/browser/chrome_browser_main_win.cc
index e3aac45..c03597d 100644
--- a/chrome/browser/chrome_browser_main_win.cc
+++ b/chrome/browser/chrome_browser_main_win.cc
@@ -27,6 +27,7 @@
 #include "chrome/browser/chrome_elf_init_win.h"
 #include "chrome/browser/first_run/first_run.h"
 #include "chrome/browser/install_verification/win/install_verification.h"
+#include "chrome/browser/prefs/incognito_mode_prefs.h"
 #include "chrome/browser/profiles/profile_info_cache.h"
 #include "chrome/browser/profiles/profile_shortcut_manager.h"
 #include "chrome/browser/shell_integration.h"
@@ -213,6 +214,8 @@ void ChromeBrowserMainPartsWin::PreMainMessageLoopStart() {
     // Make sure that we know how to handle exceptions from the message loop.
     InitializeWindowProcExceptions();
   }
+
+  IncognitoModePrefs::InitializePlatformParentalControls();
 }
 
 int ChromeBrowserMainPartsWin::PreCreateThreads() {
diff --git a/chrome/browser/prefs/incognito_mode_prefs.cc b/chrome/browser/prefs/incognito_mode_prefs.cc
index 7d124ff..3b7b327 100644
--- a/chrome/browser/prefs/incognito_mode_prefs.cc
+++ b/chrome/browser/prefs/incognito_mode_prefs.cc
@@ -20,6 +20,14 @@
 #include "chrome/browser/android/chromium_application.h"
 #endif  // OS_ANDROID
 
+#if defined(OS_WIN)
+namespace {
+
+bool g_parental_control_on = false;
+
+} // empty namespace
+#endif  // OS_WIN
+
 // static
 bool IncognitoModePrefs::IntToAvailability(int in_value,
                                            Availability* out_value) {
@@ -102,3 +110,20 @@ bool IncognitoModePrefs::ArePlatformParentalControlsEnabled() {
   return false;
 #endif
 }
+
+#if defined(OS_WIN)
+void IncognitoModePrefs::InitializePlatformParentalControls() {
+  g_parental_control_on = base::win::IsParentalControlActivityLoggingOn();
+}
+#endif // OS_WIN
+
+bool IncognitoModePrefs::ArePlatformParentalControlsEnabledCached() {
+#if defined(OS_WIN)
+  return g_parental_control_on;
+#elif defined(OS_ANDROID)
+  return chrome::android::ChromiumApplication::AreParentalControlsEnabled();
+#else
+  return false;
+#endif
+}
+
diff --git a/chrome/browser/prefs/incognito_mode_prefs.h b/chrome/browser/prefs/incognito_mode_prefs.h
index d7d8d29..0837cb4 100644
--- a/chrome/browser/prefs/incognito_mode_prefs.h
+++ b/chrome/browser/prefs/incognito_mode_prefs.h
@@ -63,6 +63,17 @@ class IncognitoModePrefs {
   // open new windows.
   static bool CanOpenBrowser(Profile* profile);
 
+  // Returns whether parental controls have been enabled on the platform. This
+  // method simply returns a cached value and thus the result may be stale. May
+  // be called on any thread.
+  static bool ArePlatformParentalControlsEnabledCached();
+
+#if defined(OS_WIN)
+  // Initializes the parental control settings. Must be called on UI thread and
+  // before |ArePlatformParentalControlsEnabled|.
+  static void InitializePlatformParentalControls();
+#endif // OS_WIN
+
  private:
   // Returns whether parental controls have been enabled on the platform, which
   // if enabled will overrule the Availability as configured in prefs.
diff --git a/chrome/browser/signin/signin_header_helper.cc b/chrome/browser/signin/signin_header_helper.cc
index c3b1b96..b2c8891 100644
--- a/chrome/browser/signin/signin_header_helper.cc
+++ b/chrome/browser/signin/signin_header_helper.cc
@@ -224,9 +224,9 @@ bool AppendMirrorRequestHeaderIfPossible(
   std::string account_id(io_data->google_services_account_id()->GetValue());
 
   int profile_mode_mask = PROFILE_MODE_DEFAULT;
-  // TODO(guohui): Needs to check for parent control as well.
   if (io_data->incognito_availibility()->GetValue() ==
-          IncognitoModePrefs::DISABLED) {
+          IncognitoModePrefs::DISABLED ||
+      IncognitoModePrefs::ArePlatformParentalControlsEnabledCached()) {
     profile_mode_mask |= PROFILE_MODE_INCOGNITO_DISABLED;
   }