Disable all the browser_tests that are flaking more than 5% of the time on trybots.

chrome/browser/ui/webui/print_preview/print_preview_ui_browsertest.cc

Index: chrome/browser/ui/webui/print_preview/print_preview_ui_browsertest.cc
diff --git a/chrome/browser/ui/webui/print_preview/print_preview_ui_browsertest.cc b/chrome/browser/ui/webui/print_preview/print_preview_ui_browsertest.cc
index dd11aacea3d0a8594124442c237edbad2196ad57..e9b485d86a88a4420e14851044de9abb13adcba0 100644
--- a/chrome/browser/ui/webui/print_preview/print_preview_ui_browsertest.cc
+++ b/chrome/browser/ui/webui/print_preview/print_preview_ui_browsertest.cc
@@ -102,14 +102,9 @@ IN_PROC_BROWSER_TEST_F(PrintPreviewTest, MAYBE_TaskManagerNewPrintPreview) {
       WaitForTaskManagerRows(1, MatchPrint(url::kAboutBlankURL)));
 }
 
-// Disable the test for mac as it started being flaky, see http://crbug/367665.
-#if defined(OS_MACOSX) && !defined(OS_IOS)
-#define MAYBE_TaskManagerExistingPrintPreview DISABLED_TaskManagerExistingPrintPreview
-#else
-#define MAYBE_TaskManagerExistingPrintPreview TaskManagerExistingPrintPreview
-#endif
+// http://crbug/367665.
 IN_PROC_BROWSER_TEST_F(PrintPreviewTest,
-                       MAYBE_TaskManagerExistingPrintPreview) {
+                       DISABLED_TaskManagerExistingPrintPreview) {
   // Create the print preview dialog.
   Print();
 
@@ -183,7 +178,8 @@ IN_PROC_BROWSER_TEST_F(PrintPreviewTest, WindowedNPAPIPluginHidden) {
   ASSERT_FALSE(rects_equal);
 }
 
-IN_PROC_BROWSER_TEST_F(PrintPreviewTest, NoCrashOnCloseWithOtherTabs) {
+// http://crbug.com/396360
+IN_PROC_BROWSER_TEST_F(PrintPreviewTest, DISABLED_NoCrashOnCloseWithOtherTabs) {
   // Now print preview.
   Print();