Fix closing namespace comments in //net.

net/disk_cache/simple/simple_entry_operation.cc

Index: net/disk_cache/simple/simple_entry_operation.cc
diff --git a/net/disk_cache/simple/simple_entry_operation.cc b/net/disk_cache/simple/simple_entry_operation.cc
index ce8b09c8fa273a21142bc4d285737e64e6af29c4..7e2f7894a43de1c3a8ad4fa000283db6c1dd5785 100644
--- a/net/disk_cache/simple/simple_entry_operation.cc
+++ b/net/disk_cache/simple/simple_entry_operation.cc
@@ -32,7 +32,7 @@ bool IsSparseType(unsigned type) {
          type == SimpleEntryOperation::TYPE_WRITE_SPARSE;
 }
 
-}
+}  // anonymous namespace
 
 SimpleEntryOperation::SimpleEntryOperation(const SimpleEntryOperation& other)
     : entry_(other.entry_.get()),