Remove WebGraphicsContext3D::getGLES2Interface().

third_party/WebKit/Source/modules/webgl/WebGLTransformFeedback.cpp

 // Copyright 2015 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 "modules/webgl/WebGLTransformFeedback.h"
 
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "modules/webgl/WebGL2RenderingContextBase.h"
 
 namespace blink {
@@ skipping 14 matching lines @@
     , m_target(0)
     , m_active(false)
     , m_paused(false)
     , m_program(nullptr)
 {
     GLuint tf;
     ctx->contextGL()->GenTransformFeedbacks(1, &tf);
     setObject(tf);
 }
 
-void WebGLTransformFeedback::deleteObjectImpl(WebGraphicsContext3D* context3d, gpu::gles2::GLES2Interface* gl)
+void WebGLTransformFeedback::deleteObjectImpl(gpu::gles2::GLES2Interface* gl)
 {
     gl->DeleteTransformFeedbacks(1, &m_object);
     m_object = 0;
 }
 
 void WebGLTransformFeedback::setTarget(GLenum target)
 {
     if (m_target)
         return;
     if (target == GL_TRANSFORM_FEEDBACK)
@@ skipping 15 matching lines @@
     m_program = program;
 }
 
 DEFINE_TRACE(WebGLTransformFeedback)
 {
     visitor->trace(m_program);
     WebGLSharedPlatform3DObject::trace(visitor);
 }
 
 } // namespace blink