Add a helper function to query whether parental control logging is on for the current chrome user

to base\win\metro.

BUG=133560
R=cpu
Review URL: https://chromiumcodereview.appspot.com/10693133

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@146214 0039d316-1c4b-4281-b951-d872f2087c98

base/win/metro.cc

@@ -4,7 +4,10 @@
 
 #include "base/win/metro.h"
 
+#include "base/message_loop.h"
 #include "base/string_util.h"
+#include "base/win/scoped_comptr.h"
+#include "base/win/windows_version.h"
 
 namespace base {
 namespace win {
@@ -83,5 +86,40 @@ bool IsTouchEnabled() {
              (NID_READY | NID_INTEGRATED_TOUCH);
 }
 
+bool IsParentalControlActivityLoggingOn() {
+  DCHECK(MessageLoop::current() &&
+         (MessageLoop::current()->type() == MessageLoop::TYPE_UI));
+
+  // Query this info on Windows 8 and above.
+  if (base::win::GetVersion() < base::win::VERSION_WIN8)
+    return false;
+
+  static bool parental_control_logging_required = false;
+  static bool parental_control_status_determined = false;
+
+  if (parental_control_status_determined)
+    return parental_control_logging_required;
+
+  parental_control_status_determined = true;
+
+  ScopedComPtr<IWindowsParentalControlsCore> parent_controls;
+  HRESULT hr = parent_controls.CreateInstance(
+      __uuidof(WindowsParentalControls));
+  if (FAILED(hr))
+    return false;
+
+  ScopedComPtr<IWPCSettings> settings;
+  hr = parent_controls->GetUserSettings(NULL, settings.Receive());
+  if (FAILED(hr))
+    return false;
+
+  unsigned long restrictions = 0;
+  settings->GetRestrictions(&restrictions);
+
+  parental_control_logging_required =
+      (restrictions & WPCFLAG_LOGGING_REQUIRED) == WPCFLAG_LOGGING_REQUIRED;
+  return parental_control_logging_required;
+}
+
 }  // namespace win
 }  // namespace base

base/win/metro.h

@@ -6,6 +6,7 @@
 #define BASE_WIN_METRO_H_
 
 #include <windows.h>
+#include <wpcapi.h>
 
 #include "base/base_export.h"
 #include "base/string16.h"
@@ -61,6 +62,10 @@ BASE_EXPORT wchar_t* LocalAllocAndCopyString(const string16& src);
 // Returns true if the screen supports touch.
 BASE_EXPORT bool IsTouchEnabled();
 
+// Returns true if Windows 8 Parental control activity logging is enabled.
+// Can only be called on the UI thread.
+BASE_EXPORT bool IsParentalControlActivityLoggingOn();
+
 }  // namespace win
 }  // namespace base