Cleanup namespace usage in platform/fonts/.

Source/platform/fonts/linux/FontPlatformDataLinux.cpp

 /*
  * Copyright (c) 2006, 2007, 2008, 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 84 matching lines @@
 
     const float ts = m_textSize >= 0 ? m_textSize : 12;
     paint->setTextSize(SkFloatToScalar(ts));
     paint->setTypeface(m_typeface.get());
     paint->setFakeBoldText(m_syntheticBold);
     paint->setTextSkewX(m_syntheticItalic ? -SK_Scalar1 / 4 : 0);
 }
 
 void FontPlatformData::querySystemForRenderStyle(bool useSkiaSubpixelPositioning)
 {
-    blink::WebFontRenderStyle style;
+    WebFontRenderStyle style;
 #if OS(ANDROID)
     style.setDefaults();
 #else
     // If the font name is missing (i.e. probably a web font) or the sandbox is disabled, use the system defaults.
-    if (!m_family.length() || !blink::Platform::current()->sandboxSupport()) {
+    if (!m_family.length() || !Platform::current()->sandboxSupport()) {
         style.setDefaults();
     } else {
         const int sizeAndStyle = (((int)m_textSize) << 2) | (m_typeface->style() & 3);
-        blink::Platform::current()->sandboxSupport()->getRenderStyleForStrike(m_family.data(), sizeAndStyle, &style);
+        Platform::current()->sandboxSupport()->getRenderStyleForStrike(m_family.data(), sizeAndStyle, &style);
     }
 #endif
     style.toFontRenderStyle(&m_style);
 
     // Fix FontRenderStyle::NoPreference to actual styles.
     if (m_style.useAntiAlias == FontRenderStyle::NoPreference)
         m_style.useAntiAlias = useSkiaAntiAlias;
 
     if (!m_style.useHinting)
         m_style.hintStyle = SkPaint::kNo_Hinting;
@@ skipping 14 matching lines @@
         || LayoutTestSupport::isRunningLayoutTest())
         m_style.useSubpixelPositioning = useSkiaSubpixelPositioning;
 }
 
 bool FontPlatformData::defaultUseSubpixelPositioning()
 {
     return FontDescription::subpixelPositioning();
 }
 
 } // namespace blink