memory-infra: Disable two MemoryDumpManager tests on iOS

base/trace_event/memory_dump_manager_unittest.cc

 // Copyright 2015 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 "base/trace_event/memory_dump_manager.h"
 
 #include <stdint.h>
 
 #include <memory>
 #include <utility>
@@ skipping 14 matching lines @@
 #include "base/threading/sequenced_task_runner_handle.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/trace_event/memory_dump_provider.h"
 #include "base/trace_event/memory_dump_scheduler.h"
 #include "base/trace_event/memory_infra_background_whitelist.h"
 #include "base/trace_event/process_memory_dump.h"
 #include "base/trace_event/trace_buffer.h"
 #include "base/trace_event/trace_config_memory_test_util.h"
+#include "build/build_config.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using testing::_;
 using testing::AnyNumber;
 using testing::AtMost;
 using testing::Between;
 using testing::Invoke;
 using testing::Return;
 
@@ skipping 387 matching lines @@
   EXPECT_CALL(*delegate_, RequestGlobalMemoryDump(_, _)).Times(1);
   EXPECT_CALL(mdp1, OnMemoryDump(_, _)).WillOnce(Return(true));
   EXPECT_CALL(mdp2, OnMemoryDump(_, _)).WillOnce(Return(true));
   RequestGlobalDumpAndWait(MemoryDumpType::EXPLICITLY_TRIGGERED,
                            MemoryDumpLevelOfDetail::DETAILED);
   DisableTracing();
 }
 
 // Checks that the dump provider invocations depend only on the current
 // registration state and not on previous registrations and dumps.
-// flaky: crbug.com/706874
-TEST_F(MemoryDumpManagerTest, DISABLED_RegistrationConsistency) {
+// Flaky on iOS, see crbug.com/706874
+#if defined(OS_IOS)
+#define MAYBE_RegistrationConsistency DISABLED_RegistrationConsistency
+#else
+#define MAYBE_RegistrationConsistency RegistrationConsistency
+#endif
+TEST_F(MemoryDumpManagerTest, MAYBE_RegistrationConsistency) {
   InitializeMemoryDumpManager(false /* is_coordinator */);
   MockMemoryDumpProvider mdp;
 
   RegisterDumpProvider(&mdp, ThreadTaskRunnerHandle::Get());
 
   {
     EXPECT_CALL(*delegate_, RequestGlobalMemoryDump(_, _)).Times(1);
     EXPECT_CALL(mdp, OnMemoryDump(_, _)).WillOnce(Return(true));
     EnableTracingWithLegacyCategories(MemoryDumpManager::kTraceCategory);
     RequestGlobalDumpAndWait(MemoryDumpType::EXPLICITLY_TRIGGERED,
@@ skipping 553 matching lines @@
 
   EnableTracingWithTraceConfig(
       TraceConfigMemoryTestUtil::GetTraceConfig_PeriodicTriggers(
           kLightDumpPeriodMs, kHeavyDumpPeriodMs));
   run_loop.Run();
   DisableTracing();
 }
 
 // Tests against race conditions that might arise when disabling tracing in the
 // middle of a global memory dump.
-// flaky: crbug.com/706874
-TEST_F(MemoryDumpManagerTest, DISABLED_DisableTracingWhileDumping) {
+// Flaky on iOS, see crbug.com/706961
+#if defined(OS_IOS)
+#define MAYBE_DisableTracingWhileDumping DISABLED_DisableTracingWhileDumping
+#else
+#define MAYBE_DisableTracingWhileDumping DisableTracingWhileDumping
+#endif
+TEST_F(MemoryDumpManagerTest, MAYBE_DisableTracingWhileDumping) {
   base::WaitableEvent tracing_disabled_event(
       WaitableEvent::ResetPolicy::AUTOMATIC,
       WaitableEvent::InitialState::NOT_SIGNALED);
   InitializeMemoryDumpManager(false /* is_coordinator */);
 
   // Register a bound dump provider.
   std::unique_ptr<Thread> mdp_thread(new Thread("test thread"));
   mdp_thread->Start();
   MockMemoryDumpProvider mdp_with_affinity;
   RegisterDumpProvider(&mdp_with_affinity, mdp_thread->task_runner(),
@@ skipping 262 matching lines @@
   thread.Start();
   RegisterDumpProvider(&mdp1, thread.task_runner(), kDefaultOptions,
                        "BlacklistTestDumpProvider");
   // Unregistering on wrong thread should not crash.
   mdm_->UnregisterDumpProvider(&mdp1);
   thread.Stop();
 }
 
 }  // namespace trace_event
 }  // namespace base