Removing "using" declarations that import names in the C++ Standard library.(Source/platform/[m* - …

Source/platform/transforms/PerspectiveTransformOperation.cpp

 /*
  * Copyright (C) 2009 Apple 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
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 11 matching lines @@
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "platform/transforms/PerspectiveTransformOperation.h"
 
 #include "platform/animation/AnimationUtilities.h"
 #include "wtf/MathExtras.h"
 
-using namespace std;
-
 namespace blink {
 
 PassRefPtr<TransformOperation> PerspectiveTransformOperation::blend(const TransformOperation* from, double progress, bool blendToIdentity)
 {
     if (from && !from->isSameType(*this))
         return this;
 
     if (blendToIdentity) {
         double p = blink::blend(m_p, 1., progress); // FIXME: this seems wrong. https://bugs.webkit.org/show_bug.cgi?id=52700
         return PerspectiveTransformOperation::create(clampToPositiveInteger(p));
@@ skipping 10 matching lines @@
     toT.decompose(decomp);
 
     if (decomp.perspectiveZ) {
         double val = -1.0 / decomp.perspectiveZ;
         return PerspectiveTransformOperation::create(clampToPositiveInteger(val));
     }
     return PerspectiveTransformOperation::create(0);
 }
 
 } // namespace blink