[Oilpan] Migrate classes under module/webgl onto oilpan heap

Source/modules/webgl/EXTBlendMinMax.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "config.h"
 
 #include "modules/webgl/EXTBlendMinMax.h"
 
 namespace blink {
 
 EXTBlendMinMax::EXTBlendMinMax(WebGLRenderingContextBase* context)
     : WebGLExtension(context)
 {
     context->extensionsUtil()->ensureExtensionEnabled("GL_EXT_blend_minmax");
 }
 
 EXTBlendMinMax::~EXTBlendMinMax()
 {
 }
 
 WebGLExtensionName EXTBlendMinMax::name() const
 {
     return EXTBlendMinMaxName;
 }
 
-PassRefPtrWillBeRawPtr<EXTBlendMinMax> EXTBlendMinMax::create(WebGLRenderingContextBase* context)
+EXTBlendMinMax* EXTBlendMinMax::create(WebGLRenderingContextBase* context)
 {
-    return adoptRefWillBeNoop(new EXTBlendMinMax(context));
+    return new EXTBlendMinMax(context);
 }
 
 bool EXTBlendMinMax::supported(WebGLRenderingContextBase* context)
 {
     return context->extensionsUtil()->supportsExtension("GL_EXT_blend_minmax");
 }
 
 const char* EXTBlendMinMax::extensionName()
 {
     return "EXT_blend_minmax";
 }
 
 } // namespace blink