TSAN: Speculative fix for race errors in DeviceOrientationProviderTest.

content/browser/device_orientation/provider_unittest.cc

 // Copyright (c) 2012 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 <queue>
 
 #include "base/message_loop.h"
 #include "base/synchronization/lock.h"
 #include "content/browser/device_orientation/data_fetcher.h"
 #include "content/browser/device_orientation/orientation.h"
@@ skipping 48 matching lines @@
 
  private:
   // Set up by the test fixture, which then blocks while it is accessed
   // from OnOrientationUpdate which is executed on the test fixture's
   // message_loop_.
   int* expectations_count_ptr_;
   std::queue<Orientation> expectations_queue_;
 };
 
 // Class for injecting test orientation data into the Provider.
-class MockOrientationFactory : public base::RefCounted<MockOrientationFactory> {
+class MockOrientationFactory
+    : public base::RefCountedThreadSafe<MockOrientationFactory> {
  public:
   MockOrientationFactory()
       : is_failing_(false) {
   }
 
   static void SetCurInstance(MockOrientationFactory* instance) {
     if (instance) {
       EXPECT_FALSE(instance_);
     }
     else {
@@ skipping 11 matching lines @@
     base::AutoLock auto_lock(lock_);
     orientation_ = orientation;
   }
 
   void SetFailing(bool is_failing) {
     base::AutoLock auto_lock(lock_);
     is_failing_ = is_failing;
   }
 
  private:
-  friend class base::RefCounted<MockOrientationFactory>;
+  friend class base::RefCountedThreadSafe<MockOrientationFactory>;
 
   ~MockOrientationFactory() {
   }
 
   // Owned by ProviderImpl. Holds a reference back to MockOrientationFactory.
   class MockDataFetcher : public DataFetcher {
    public:
     explicit MockDataFetcher(MockOrientationFactory* orientation_factory)
         : orientation_factory_(orientation_factory) { }
 
@@ skipping 349 matching lines @@
   MessageLoop::current()->Run();
 
   provider_->RemoveObserver(checker_a.get());
   provider_->RemoveObserver(checker_b.get());
   MockOrientationFactory::SetCurInstance(NULL);
 }
 
 }  // namespace
 
 }  // namespace device_orientation