GTTF: Detect browser crashes on shutdown in UI tests.

chrome_frame/test/perf/chrome_frame_perftest.cc

Index: chrome_frame/test/perf/chrome_frame_perftest.cc
===================================================================
--- chrome_frame/test/perf/chrome_frame_perftest.cc	(revision 80488)
+++ chrome_frame/test/perf/chrome_frame_perftest.cc	(working copy)
@@ -1358,7 +1358,8 @@
 
 bool RunSingleTestOutOfProc(const std::string& test_name) {
   FilePath path;
-  PathService::Get(base::DIR_EXE, &path);
+  if (!PathService::Get(base::DIR_EXE, &path))
+    return false;
   path = path.Append(L"chrome_frame_tests.exe");
 
   CommandLine cmd_line(path);
@@ -1384,6 +1385,8 @@
       base::KillProcess(process_handle, -1, true);
   }
 
+  base::CloseProcessHandle(process_handle);
+
   return exit_code == 0;
 }