Remove duplicated headers from the testing/ directory

Source/testing/runner/WebTestThemeControlWin.cpp

 /*
  * Copyright (C) 2010 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 23 matching lines @@
 // platform-specific rendering differences due to themes, colors, etc.
 //
 
 #include "WebTestThemeControlWin.h"
 
 #include "TestCommon.h"
 #include "skia/ext/skia_utils_win.h"
 #include "third_party/skia/include/core/SkCanvas.h"
 #include "third_party/skia/include/core/SkPaint.h"
 #include "third_party/skia/include/core/SkPath.h"
-#include "third_party/skia/include/core/SkRect.h"
 
 #include <algorithm>
 
 using namespace blink;
 using namespace std;
 
 namespace WebTestRunner {
 
 namespace {
 
@@ skipping 428 matching lines @@
     SkIRect tofill;
     tofill.intersect(m_irect, fillRect);
     paint.setColor(m_fgColor);
     paint.setStyle(SkPaint::kFill_Style);
     m_canvas->drawIRect(tofill, paint);
 
     markState();
 }
 
 }