Add Reset to ScopedClosureRunner.

base/bind_helpers_unittest.cc

Index: base/bind_helpers_unittest.cc
diff --git a/base/bind_helpers_unittest.cc b/base/bind_helpers_unittest.cc
index 3ef2d7543540464ddefc06c14d9726078d18a2b0..26e82c48ded4a9d2fbb1ed5caee572fac28dd777 100644
--- a/base/bind_helpers_unittest.cc
+++ b/base/bind_helpers_unittest.cc
@@ -36,4 +36,16 @@ TEST(BindHelpersTest, TestScopedClosureRunnerRelease) {
   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