Cleanup namespace usage in platform/graphics/[G-S]*

Source/platform/graphics/LoggingCanvas.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 606 matching lines @@
     default:
         ASSERT_NOT_REACHED();
         return "?";
     };
 }
 
 PassRefPtr<JSONObject> LoggingCanvas::objectForBitmapData(const SkBitmap& bitmap)
 {
     RefPtr<JSONObject> dataItem = JSONObject::create();
     Vector<unsigned char> output;
-    blink::PNGImageEncoder::encode(bitmap, &output);
+    PNGImageEncoder::encode(bitmap, &output);
     dataItem->setString("base64", WTF::base64Encode(reinterpret_cast<char*>(output.data()), output.size()));
     dataItem->setString("mimeType", "image/png");
     return dataItem.release();
 }
 
 PassRefPtr<JSONObject> LoggingCanvas::objectForSkBitmap(const SkBitmap& bitmap)
 {
     RefPtr<JSONObject> bitmapItem = JSONObject::create();
     bitmapItem->setNumber("width", bitmap.width());
     bitmapItem->setNumber("height", bitmap.height());
@@ skipping 227 matching lines @@
         WTF::Vector<SkUnichar> dataVector(byteLength / 2);
         SkUnichar* textData = dataVector.data();
         paint.glyphsToUnichars(static_cast<const uint16_t*>(text), byteLength / 2, textData);
         return WTF::UTF32LittleEndianEncoding().decode(reinterpret_cast<const char*>(textData), byteLength * 2);
     }
     default:
         ASSERT_NOT_REACHED();
         return "?";
     }
 }
-}
+
+} // namespace blink