Adding missing inclusions


BUG=None
TEST='LoggingTest.*,FileUtilTest.*,PlatformFile.*,StringNumberConversionsTest.*,Time,TimeTicks,TimeDelta'


Review URL: http://codereview.chromium.org/7108033

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@89595 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/base/logging.h b/base/logging.h
index 54d6dfd..b12defc 100644
--- a/base/logging.h
+++ b/base/logging.h
@@ -6,6 +6,7 @@
 #define BASE_LOGGING_H_
 #pragma once
 
+#include <cassert>
 #include <string>
 #include <cstring>
 #include <sstream>