Disable RequestCoordinatorTest.PauseAndResumeObserver on IOS

components/offline_pages/background/request_coordinator_unittest.cc

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/offline_pages/background/request_coordinator.h"
 
 #include <memory>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 1239 matching lines @@
   // Wait for async get to finish.
   WaitForCallback();
   PumpLoop();
 
   // Check that the statuses found in the callback match what we expect.
   EXPECT_EQ(2UL, last_requests().size());
   EXPECT_EQ(kRequestId1, last_requests().at(0)->request_id());
   EXPECT_EQ(kRequestId2, last_requests().at(1)->request_id());
 }
 
-TEST_F(RequestCoordinatorTest, PauseAndResumeObserver) {
+#if defined(OS_IOS)
+// Flaky on IOS. http://crbug/663311
+#define MAYBE_PauseAndResumeObserver DISABLED_PauseAndResumeObserver
+#else
+#define MAYBE_PauseAndResumeObserver PauseAndResumeObserver
+#endif
+TEST_F(RequestCoordinatorTest, MAYBE_PauseAndResumeObserver) {
   // Add a request to the queue.
   offline_pages::SavePageRequest request1(kRequestId1, kUrl1, kClientId1,
                                           base::Time::Now(), kUserRequested);
   coordinator()->queue()->AddRequest(
       request1, base::Bind(&RequestCoordinatorTest::AddRequestDone,
                            base::Unretained(this)));
   PumpLoop();
 
   // Pause the request.
   std::vector<int64_t> request_ids;
@@ skipping 124 matching lines @@
   // Now whether processing triggered immediately depends on whether test
   // is run on svelte device or not.
   if (base::SysInfo::IsLowEndDevice()) {
     EXPECT_FALSE(is_busy());
   } else {
     EXPECT_TRUE(is_busy());
   }
 }
 
 }  // namespace offline_pages