Update from https://crrev.com/309717

cc/test/test_gles2_interface.h

 // Copyright 2013 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.
 
 #ifndef CC_TEST_TEST_GLES2_INTERFACE_H_
 #define CC_TEST_TEST_GLES2_INTERFACE_H_
 
 #include "gpu/command_buffer/client/gles2_interface_stub.h"
 
 namespace cc {
@@ skipping 46 matching lines @@
   void Flush() override;
   void Finish() override;
   void ShallowFlushCHROMIUM() override;
   void Enable(GLenum cap) override;
   void Disable(GLenum cap) override;
 
   void BindBuffer(GLenum target, GLuint buffer) override;
   void BindRenderbuffer(GLenum target, GLuint buffer) override;
   void BindFramebuffer(GLenum target, GLuint buffer) override;
 
+  void PixelStorei(GLenum pname, GLint param) override;
+
   void TexImage2D(GLenum target,
                   GLint level,
                   GLint internalformat,
                   GLsizei width,
                   GLsizei height,
                   GLint border,
                   GLenum format,
                   GLenum type,
                   const void* pixels) override;
   void TexSubImage2D(GLenum target,
@@ skipping 98 matching lines @@
   void ResizeCHROMIUM(GLuint width, GLuint height, float device_scale) override;
   void LoseContextCHROMIUM(GLenum current, GLenum other) override;
 
  private:
   TestWebGraphicsContext3D* test_context_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_TEST_GLES2_INTERFACE_H_