Fix file leaks in a ETW test and a ScopedTempDir test.

base/win/event_trace_controller_unittest.cc

Index: base/win/event_trace_controller_unittest.cc
===================================================================
--- base/win/event_trace_controller_unittest.cc	(revision 114285)
+++ base/win/event_trace_controller_unittest.cc	(working copy)
@@ -148,6 +148,7 @@
                                            temp.value().c_str());
   if (hr == E_ACCESSDENIED) {
     VLOG(1) << "You must be an administrator to run this test on Vista";
+    file_util::Delete(temp, false);
     return;
   }
 
@@ -157,6 +158,7 @@
   EXPECT_HRESULT_SUCCEEDED(controller.Stop(NULL));
   EXPECT_EQ(NULL, controller.session());
   EXPECT_STREQ(L"", controller.session_name());
+  file_util::Delete(temp, false);
 }
 
 TEST(EtwTraceControllerTest, EnableDisable) {