Cleanup namespace usage in public/platform/{Web[P-W]*,linux/*}.h

public/platform/linux/WebFontRenderStyle.h

Index: public/platform/linux/WebFontRenderStyle.h
diff --git a/public/platform/linux/WebFontRenderStyle.h b/public/platform/linux/WebFontRenderStyle.h
index d58cf797f66a5b7a9e8587fbe28a9d5475b33384..765774ae8b023b4ed209000795ed0bccf4306ee9 100644
--- a/public/platform/linux/WebFontRenderStyle.h
+++ b/public/platform/linux/WebFontRenderStyle.h
@@ -33,10 +33,10 @@
 
 #include "../WebCommon.h"
 
-namespace blink { struct FontRenderStyle; }
-
 namespace blink {
 
+struct FontRenderStyle;
+
 struct BLINK_EXPORT WebFontRenderStyle {
     // Each of the use* members below can take one of three values:
     //   0: off
@@ -52,7 +52,7 @@ struct BLINK_EXPORT WebFontRenderStyle {
 
 #if BLINK_IMPLEMENTATION || BLINK_PLATFORM_IMPLEMENTATION
     // Translates the members of this struct to a FontRenderStyle
-    void toFontRenderStyle(blink::FontRenderStyle*);
+    void toFontRenderStyle(FontRenderStyle*);
 #endif
 
     void setDefaults();