Mojo: Remove extra blank line

This is a follow up of https://codereview.chromium.org/392063002/

BUG=none
TBR=viettrungluu@chromium.org
TEST=none

Review URL: https://codereview.chromium.org/397063002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@283727 0039d316-1c4b-4281-b951-d872f2087c98

mojo/public/cpp/utility/tests/run_loop_unittest.cc

@@ -190,7 +190,6 @@ TEST_F(RunLoopTest, Current) {
   EXPECT_TRUE(RunLoop::current() == NULL);
 }
 
-
 class NestingRunLoopHandler : public TestRunLoopHandler {
  public:
   static const size_t kDepthLimit;