Remove WebGraphicsContext3D::getGLES2Interface().

third_party/WebKit/Source/modules/webgl/WebGLSampler.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/WebGLSampler.h"
 
 #include "gpu/command_buffer/client/gles2_interface.h"
 #include "modules/webgl/WebGL2RenderingContextBase.h"
 
 namespace blink {
@@ skipping 10 matching lines @@
 }
 
 WebGLSampler::WebGLSampler(WebGL2RenderingContextBase* ctx)
     : WebGLSharedPlatform3DObject(ctx)
 {
     GLuint sampler;
     ctx->contextGL()->GenSamplers(1, &sampler);
     setObject(sampler);
 }
 
-void WebGLSampler::deleteObjectImpl(WebGraphicsContext3D* context3d, gpu::gles2::GLES2Interface* gl)
+void WebGLSampler::deleteObjectImpl(gpu::gles2::GLES2Interface* gl)
 {
     gl->DeleteSamplers(1, &m_object);
     m_object = 0;
 }
 
 } // namespace blink