Remove UnusedParam.h

Source/platform/graphics/GraphicsContext.cpp

 /*
  * Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
  * 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 598 matching lines @@
     if (strokeStyle() != NoStroke) {
         paint.reset();
         setupPaintForStroking(&paint);
         drawOval(rect, paint);
     }
 }
 
 void GraphicsContext::drawFocusRing(const Path& focusRingPath, int width, int offset, const Color& color)
 {
     // FIXME: Implement support for offset.
-    UNUSED_PARAM(offset);
-
     if (paintingDisabled())
         return;
 
     SkPaint paint;
     paint.setAntiAlias(true);
     paint.setStyle(SkPaint::kStroke_Style);
     paint.setColor(color.rgb());
 
     drawOuterPath(focusRingPath.skPath(), paint, width);
     drawInnerPath(focusRingPath.skPath(), paint, width);
@@ skipping 1335 matching lines @@
 
 void GraphicsContext::didDrawTextInRect(const SkRect& textRect)
 {
     if (m_trackTextRegion) {
         TRACE_EVENT0("skia", "PlatformContextSkia::trackTextRegion");
         m_textRegion.join(textRect);
     }
 }
 
 }