Mark a WebRestrictionsResourceThrottleTest test flaky

components/web_restrictions/browser/web_restrictions_resource_throttle_unittest.cc

Index: components/web_restrictions/browser/web_restrictions_resource_throttle_unittest.cc
diff --git a/components/web_restrictions/browser/web_restrictions_resource_throttle_unittest.cc b/components/web_restrictions/browser/web_restrictions_resource_throttle_unittest.cc
index f92951cd739dece2340c943c2815c1b2184ef178..933bb32656931883e5e8ff0bbd7db6271d792d81 100644
--- a/components/web_restrictions/browser/web_restrictions_resource_throttle_unittest.cc
+++ b/components/web_restrictions/browser/web_restrictions_resource_throttle_unittest.cc
@@ -114,7 +114,15 @@ TEST_F(WebRestrictionsResourceThrottleTest, WillStartRequest_DeferredForbid) {
   EXPECT_EQ(net::ERR_BLOCKED_BY_ADMINISTRATOR, delegate_.GetErrorCode());
 }
 
-TEST_F(WebRestrictionsResourceThrottleTest, WillStartRequest_Subresource) {
+#if defined(OS_ANDROID)
+// Flaky on android: https://crbug.com/718066
+#define MAYBE_WillStartRequest_Subresource DISABLED_WillStartRequest_Subresource
+#else
+#define MAYBE_WillStartRequest_Subresource WillStartRequest_Subresource
+#endif
+
+TEST_F(WebRestrictionsResourceThrottleTest,
+       MAYBE_WillStartRequest_Subresource) {
   // Only the main frame should be deferred.
   // Initialization of the delegate is asynchronous, and this will only work
   // correctly if the provider is initialized. Run a main frame through this