Use the USE_NSS macro to help porting to FreeBSD, OpenBSD, etc.

Fix cpplint nits.

R=evan,pvalchev
BUG=none
TEST=No compilation errors.
Review URL: http://codereview.chromium.org/558008

git-svn-id: http://src.chromium.org/svn/trunk/src/build@37358 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

build_config.h

@@ -49,14 +49,15 @@
 
 // For access to standard POSIXish features, use OS_POSIX instead of a
 // more specific macro.
-#if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_FREEBSD) || defined(OS_OPENBSD)
+#if defined(OS_MACOSX) || defined(OS_LINUX) || defined(OS_FREEBSD) || \
+    defined(OS_OPENBSD)
 #define OS_POSIX 1
 // Use base::DataPack for name/value pairs.
 #define USE_BASE_DATA_PACK 1
 #endif
 
 // Use tcmalloc
-#if defined(OS_WIN) && ! defined(NO_TCMALLOC)
+#if defined(OS_WIN) && !defined(NO_TCMALLOC)
 #define USE_TCMALLOC 1
 #endif