Workaround for EnsureProcessTerminated to address ProcessUtilTest failures.

Bug: 750756, 806451
Change-Id: I60ab7ca8a99bd1845492d7486e811f68105116f2
Reviewed-on: https://chromium-review.googlesource.com/890109Reviewed-by: Scott Graham <scottmg@chromium.org>
Commit-Queue: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#532558}

base/process/kill_fuchsia.cc

@@ -63,7 +63,7 @@ void EnsureProcessTerminated(Process process) {
     return;
   }
 
-  process.Terminate(/*exit_code=*/1, /*wait=*/false);
+  process.Terminate(/*exit_code=*/1, /*wait=*/true);
 }
 
 }  // namespace base