Add missing closing namespace comments to wtf.

third_party/WebKit/Source/wtf/AddressSpaceRandomization.cpp

Index: third_party/WebKit/Source/wtf/AddressSpaceRandomization.cpp
diff --git a/third_party/WebKit/Source/wtf/AddressSpaceRandomization.cpp b/third_party/WebKit/Source/wtf/AddressSpaceRandomization.cpp
index f98e5cdfafbb3a5cf06143a8e529903d1cc02a88..fd526195902e19e127f32404fca8130461796aeb 100644
--- a/third_party/WebKit/Source/wtf/AddressSpaceRandomization.cpp
+++ b/third_party/WebKit/Source/wtf/AddressSpaceRandomization.cpp
@@ -77,7 +77,7 @@ uint32_t ranval(ranctx* x)
 
 static struct ranctx s_ranctx;
 
-}
+} // namespace
 
 // Calculates a random preferred mapping address. In calculating an
 // address, we balance good ASLR against not fragmenting the address
@@ -130,4 +130,4 @@ void* getRandomPageBase()
     return reinterpret_cast<void*>(random);
 }
 
-}
+} // namespace WTF