Add Reset to ScopedClosureRunner.

base/bind_helpers_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_helpers.h"
 
 #include "base/callback.h"
 #include "base/bind.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ skipping 18 matching lines @@
   {
     base::ScopedClosureRunner runner(base::Bind(&Increment, &run_count));
     c = runner.Release();
     EXPECT_EQ(0, run_count);
   }
   EXPECT_EQ(0, run_count);
   c.Run();
   EXPECT_EQ(1, run_count);
 }
 
+TEST(BindHelpersTest, TestScopedClosureRunnerReset) {
+  int run_count_1 = 0;
+  int run_count_2 = 0;
+  {
+    base::ScopedClosureRunner runner(base::Bind(&Increment, &run_count_1));
+    runner.Reset(base::Bind(&Increment, &run_count_2));
+    EXPECT_EQ(1, run_count_1);
+    EXPECT_EQ(0, run_count_2);
+  }
+  EXPECT_EQ(1, run_count_2);
+}
+
 }  // namespace