Leaks in PrintPreviewTabController

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 # running overnight and removing outdated bugs/suppressions.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 1706 matching lines @@
 {
    bug_103945
    Heapcheck:Leak
    ...
    fun:std::*string::_Rep::_S_create
    ...
    fun:PluginService::RegisterPepperPlugins
    fun:PluginService::Init
    fun:chromeos::::GViewRequestInterceptorTest::SetUp
 }
+{
+   bug_104760
+   Heapcheck:Leak
+   fun:g_malloc
+   fun:g_slice_alloc
+   fun:g_datalist_id_set_data_full
+   fun:g_object_set_data
+   fun:views::NativeWidgetGtk::RegisterChildExposeHandler
+   fun:views::NativeViewHostGtk::NativeViewAttached
+   fun:views::NativeViewHost::Attach
+   fun:NativeTabContentsContainerGtk::AttachContents
+   fun:TabContentsContainer::ChangeTabContents
+   fun:ConstrainedHtmlDelegateGtk
+   fun:ConstrainedHtmlUI::CreateConstrainedHtmlDialog
+   fun:printing::PrintPreviewTabController::CreatePrintPreviewTab
+   fun:printing::PrintPreviewTabController::GetOrCreatePreviewTab
+#   fun:PrintPreviewHandlerTest_StickyMarginsCustomThenDefault_Test::TestBody
+#   fun:PrintPreviewTabControllerUnitTest_GetOrCreatePreviewTab_Test::TestBody
+#   fun:PrintPreviewTabControllerUnitTest_MultiplePreviewTabs_Test::TestBody
+#   fun:PrintPreviewTabControllerUnitTest_ClearInitiatorTabDetails_Test::TestBody
+}