Fix iOS compile

Add missing trailing semicolon.

Bug: 1065504
Change-Id: I98fe899a3934a1c4e6df34f7e08b171647bd9be4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2130447
Commit-Queue: Gabriel Charette <gab@chromium.org>
Reviewed-by: Gabriel Charette <gab@chromium.org>
Auto-Submit: Qijiang Fan <fqj@chromium.org>
Cr-Commit-Position: refs/heads/master@{#755104}

base/time/time_exploded_ios.cc

@@ -107,7 +107,7 @@ void Time::Explode(bool is_local, Exploded* exploded) const {
   // sure to round towards -infinity.
   exploded->millisecond =
       (microsecond >= 0) ? microsecond / kMicrosecondsPerMillisecond
-                         : ((microsecond + 1) / kMicrosecondsPerMillisecond - 1)
+                         : ((microsecond + 1) / kMicrosecondsPerMillisecond - 1);
 }
 
 }  // namespace base