Disable all the tests that are flaking more than 5% on Windows builders.

mojo/system/simple_dispatcher_unittest.cc

Index: mojo/system/simple_dispatcher_unittest.cc
diff --git a/mojo/system/simple_dispatcher_unittest.cc b/mojo/system/simple_dispatcher_unittest.cc
index 83692b7c321d44f0d1b6b70a5a74e811d14275d7..648cab9f5f3461748481abe28bfe449f288cef92 100644
--- a/mojo/system/simple_dispatcher_unittest.cc
+++ b/mojo/system/simple_dispatcher_unittest.cc
@@ -87,7 +87,13 @@ class MockSimpleDispatcher : public SimpleDispatcher {
   DISALLOW_COPY_AND_ASSIGN(MockSimpleDispatcher);
 };
 
-TEST(SimpleDispatcherTest, Basic) {
+#if defined(OS_WIN)
+// http://crbug.com/396404
+#define MAYBE_Basic DISABLED_Basic
+#else
+#define MAYBE_Basic Basic
+#endif
+TEST(SimpleDispatcherTest, MAYBE_Basic) {
   test::Stopwatch stopwatch;
 
   scoped_refptr<MockSimpleDispatcher> d(new MockSimpleDispatcher());
@@ -268,7 +274,13 @@ TEST(SimpleDispatcherTest, BasicClosed) {
   // Don't need to remove waiters from closed dispatchers.
 }
 
-TEST(SimpleDispatcherTest, BasicThreaded) {
+#if defined(OS_WIN)
+// http://crbug.com/396393
+#define MAYBE_BasicThreaded DISABLED_BasicThreaded
+#else
+#define MAYBE_BasicThreaded BasicThreaded
+#endif
+TEST(SimpleDispatcherTest, MAYBE_BasicThreaded) {
   test::Stopwatch stopwatch;
   bool did_wait;
   MojoResult result;
@@ -381,7 +393,13 @@ TEST(SimpleDispatcherTest, BasicThreaded) {
   EXPECT_EQ(MOJO_RESULT_DEADLINE_EXCEEDED, result);
 }
 
-TEST(SimpleDispatcherTest, MultipleWaiters) {
+#if defined(OS_WIN)
+// http://crbug.com/387124
+#define MAYBE_MultipleWaiters DISABLED_MultipleWaiters
+#else
+#define MAYBE_MultipleWaiters MultipleWaiters
+#endif
+TEST(SimpleDispatcherTest, MAYBE_MultipleWaiters) {
   static const uint32_t kNumWaiters = 20;
 
   bool did_wait[kNumWaiters];