Completely removed the Extensions3D class (Take 2)

Source/core/html/canvas/ANGLEInstancedArrays.cpp

 /*
  * 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:
  *
  *     * 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 15 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (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 "core/html/canvas/ANGLEInstancedArrays.h"
 
 #include "core/html/canvas/WebGLRenderingContext.h"
-#include "platform/graphics/Extensions3D.h"
 
 namespace WebCore {
 
 ANGLEInstancedArrays::ANGLEInstancedArrays(WebGLRenderingContext* context)
     : WebGLExtension(context)
 {
     ScriptWrappable::init(this);
-    context->graphicsContext3D()->extensions()->ensureEnabled("GL_ANGLE_instanced_arrays");
+    context->graphicsContext3D()->ensureExtensionEnabled("GL_ANGLE_instanced_arrays");
 }
 
 ANGLEInstancedArrays::~ANGLEInstancedArrays()
 {
 }
 
 WebGLExtension::ExtensionName ANGLEInstancedArrays::name() const
 {
     return ANGLEInstancedArraysName;
 }
 
 PassRefPtr<ANGLEInstancedArrays> ANGLEInstancedArrays::create(WebGLRenderingContext* context)
 {
     return adoptRef(new ANGLEInstancedArrays(context));
 }
 
 bool ANGLEInstancedArrays::supported(WebGLRenderingContext* context)
 {
-    Extensions3D* extensions = context->graphicsContext3D()->extensions();
-    return extensions->supports("GL_ANGLE_instanced_arrays");
+    return context->graphicsContext3D()->supportsExtension("GL_ANGLE_instanced_arrays");
 }
 
 const char* ANGLEInstancedArrays::extensionName()
 {
     return "ANGLE_instanced_arrays";
 }
 
 void ANGLEInstancedArrays::drawArraysInstancedANGLE(GLenum mode, GLint first, GLsizei count, GLsizei primcount)
 {
     if (isLost())
@@ skipping 12 matching lines @@
 
 void ANGLEInstancedArrays::vertexAttribDivisorANGLE(GLuint index, GLuint divisor)
 {
     if (isLost())
         return;
 
     m_context->vertexAttribDivisorANGLE(index, divisor);
 }
 
 } // namespace WebCore