Skip mulitple-dispay tests on win8

ash/test/ash_test_base.h

Index: ash/test/ash_test_base.h
diff --git a/ash/test/ash_test_base.h b/ash/test/ash_test_base.h
index 2d9f71707e19fbf226bc539d7014c9f355ef8520..98115ad8ac5f7c72b187d2ff1d242e1f16afdf6d 100644
--- a/ash/test/ash_test_base.h
+++ b/ash/test/ash_test_base.h
@@ -95,6 +95,8 @@ class AshTestBase : public testing::Test {
   aura::test::EventGenerator& GetEventGenerator();
 
  protected:
+  static bool IsRunningOnWin8();
+
   void RunAllPendingInMessageLoop();
 
   // Utility methods to emulate user logged in or not, session started or not
@@ -120,6 +122,22 @@ class AshTestBase : public testing::Test {
   DISALLOW_COPY_AND_ASSIGN(AshTestBase);
 };
 
+// Utility macros to skip the all or part of a test that fails on Win8 bots

[robertshield, 2013/06/10 21:13:58]

ni: the all -> all

+// but passes on Win7 bots.
+// Please refer to crbug.com/247427 for more informatino about

[robertshield, 2013/06/10 21:13:58]

nit: information

+// what type of tests should be skipped.
+#define RETURN_IF_WIN8     \
+  {                        \
+    if (IsRunningOnWin8()) \
+      return;              \
+  }
+
+#define CONTINUE_IF_WIN8   \
+  {                        \
+    if (IsRunningOnWin8()) \
+      continue;            \
+  }
+
 }  // namespace test
 }  // namespace ash