Cleanup coding style

BUG=NONE
TEST=NONE

Review URL: https://codereview.chromium.org/232973002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@263554 0039d316-1c4b-4281-b951-d872f2087c98

AUTHORS

@@ -89,6 +89,7 @@ Edward Crossman <tedoc2000@gmail.com>
 Eero Häkkinen <e.hakkinen@partner.samsung.com>
 Ehsan Akhgari <ehsan.akhgari@gmail.com>
 Elan Ruusamäe <elan.ruusamae@gmail.com>
+Eric Ahn <byungwook.ahn@gmail.com>
 Eric Rescorla <ekr@rtfm.com>
 Erik Hill <erikghill@gmail.com>
 Erik Sjölund <erik.sjolund@gmail.com>

base/atomicops.h

@@ -134,7 +134,7 @@ Atomic64 Acquire_Load(volatile const Atomic64* ptr);
 Atomic64 Release_Load(volatile const Atomic64* ptr);
 #endif  // ARCH_CPU_64_BITS
 
-}  // namespace base::subtle
+}  // namespace subtle
 }  // namespace base
 
 // Include our platform specific implementation.