Rewrite scoped_ptr<T>(NULL) to use the default ctor in sync/.

sync/engine/sync_scheduler_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 "base/bind.h"
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "base/message_loop.h"
 #include "base/test/test_timeouts.h"
@@ skipping 89 matching lines @@
         << ModelTypeSetToString(rhs_set);
   } else {
     return testing::AssertionSuccess();
   }
 }
 
 // Convenient to use in tests wishing to analyze SyncShare calls over time.
 static const size_t kMinNumSamples = 5;
 class SyncSchedulerTest : public testing::Test {
  public:
-  SyncSchedulerTest()
-      : weak_ptr_factory_(this),
-        context_(NULL),
-        syncer_(NULL),
-        delay_(NULL) {}
+  SyncSchedulerTest() : weak_ptr_factory_(this), syncer_(NULL), delay_(NULL) {}
 
   class MockDelayProvider : public BackoffDelayProvider {
    public:
     MockDelayProvider() : BackoffDelayProvider(
         TimeDelta::FromSeconds(kInitialBackoffRetrySeconds),
         TimeDelta::FromSeconds(kInitialBackoffImmediateRetrySeconds)) {
     }
 
     MOCK_METHOD1(GetDelay, TimeDelta(const TimeDelta&));
   };
@@ skipping 1191 matching lines @@
       base::Bind(&CallbackCounter::Callback, base::Unretained(&counter)));
   scheduler()->ScheduleConfiguration(params);
 
   scheduler()->OnConnectionStatusChange();
   scheduler()->OnConnectionStatusChange();
 
   PumpLoop();  // Run the nudge, that will fail and schedule a quick retry.
 }
 
 }  // namespace syncer