Cleanup namespace usage in platform/fonts/.

Source/platform/fonts/FontDataCache.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "platform/fonts/FontDataCache.h"
 
 #include "platform/fonts/SimpleFontData.h"
 
-using namespace WTF;

[kangil_, 2014/08/13 01:33:10]

I don't think we can delete this line.

[heeyoun.lee, 2014/08/13 02:57:27]

Done.

-
 namespace blink {
 
 #if !OS(ANDROID)
 const unsigned cMaxInactiveFontData = 250;
 const unsigned cTargetInactiveFontData = 200;
 #else
 const unsigned cMaxInactiveFontData = 225;
 const unsigned cTargetInactiveFontData = 200;
 #endif
 
@@ skipping 97 matching lines @@
 
     bool didWork = fontDataToDelete.size();
 
     fontDataToDelete.clear();
 
     isPurging = false;
 
     return didWork;
 }
 
-}
+} // namespace blink