Fix LocalTestServer shutdown on Windows

base/process/kill.h

Index: base/process/kill.h
diff --git a/base/process/kill.h b/base/process/kill.h
index de72d7a8dca6936fa4034b6237da2107d2db0a0a..7c4cc718e84a3a1849c945f266b0ddd1e4a044b9 100644
--- a/base/process/kill.h
+++ b/base/process/kill.h
@@ -50,6 +50,14 @@ BASE_EXPORT bool KillProcesses(const FilePath::StringType& executable_name,
 // Returns true if this is successful, false otherwise.
 BASE_EXPORT bool KillProcess(ProcessHandle process, int exit_code, bool wait);
 
+#if defined(OS_WIN)
+// Attempts to kill all processes associated with the job identified by the
+// given job handle, giving them the specified exit code. If |wait| is true,
+// wait for the job to be actually terminated before returning.
+// Returns true if this is successful, false otherwise.
+BASE_EXPORT bool KillJob(HANDLE job, int exit_code, bool wait);
+#endif  // defined(OS_WIN)
+
 #if defined(OS_POSIX)
 // Attempts to kill the process group identified by |process_group_id|. Returns
 // true on success.