ScreenshotTakerTest::TakeScreenshot test leaks

tools/heapcheck/suppressions.txt

 # There are three kinds of suppressions in this file.
 # 1. third party stuff we have no control over
 #
 # 2. intentional unit test errors, or stuff that is somehow a false positive
 # in our own code, or stuff that is so trivial it's not worth fixing
 #
 # 3. Suppressions for real chromium bugs that are not yet fixed.
 # These should all be in chromium's bug tracking system (but a few aren't yet).
 # Periodically we should sweep this file and the bug tracker clean by
 # running overnight and removing outdated bugs/suppressions.
@@ skipping 1796 matching lines @@
    ...
    fun:ProfileSigninConfirmationDialogTest_*_Test::TestBody
 }
 {
   bug_225596
   Heapcheck:Leak
   fun:chromeos::input_method::InputMethodManagerImpl::Init
   fun:chromeos::input_method::Initialize
   fun:chromeos::input_method::InputMethodConfigurationTest_TestInitialize_Test::TestBody
 }
+{
+   bug_227271a
+   Heapcheck:Leak
+   ...
+   fun:ScreenshotTaker::ShowNotification
+}
+{
+   bug_227271b
+   Heapcheck:Leak
+   fun:std::basic_string::_Rep::_S_create
+   fun:base::FilePath::Append
+   fun:base::FilePath::AppendASCII
+   fun:ScreenshotTaker::HandleTakePartialScreenshot
+   fun:ash::test::ScreenshotTakerTest_TakeScreenshot_Test::TestBody
+}