gpu: Extend CopyTextureCHROMIUM with support for copying part of source texture.

mojo/gpu/mojo_gles2_impl_autogen.h

 // 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.
 
 // This file is auto-generated from
 // gpu/command_buffer/build_gles2_cmd_buffer.py
 // It's formatted by clang-format using chromium coding style:
 //    clang-format -i -style=chromium filename
 // DO NOT EDIT!
 
@@ skipping 673 matching lines @@
                                    GLuint plane) override;
   void CopyTextureCHROMIUM(GLenum target,
                            GLenum source_id,
                            GLenum dest_id,
                            GLint internalformat,
                            GLenum dest_type) override;
   void CopySubTextureCHROMIUM(GLenum target,
                               GLenum source_id,
                               GLenum dest_id,
                               GLint xoffset,
-                              GLint yoffset) override;
+                              GLint yoffset,
+                              GLint x,
+                              GLint y,
+                              GLsizei width,
+                              GLsizei height) override;
   void DrawArraysInstancedANGLE(GLenum mode,
                                 GLint first,
                                 GLsizei count,
                                 GLsizei primcount) override;
   void DrawElementsInstancedANGLE(GLenum mode,
                                   GLsizei count,
                                   GLenum type,
                                   const void* indices,
                                   GLsizei primcount) override;
   void VertexAttribDivisorANGLE(GLuint index, GLuint divisor) override;
@@ skipping 66 matching lines @@
   void MatrixLoadfCHROMIUM(GLenum matrixMode, const GLfloat* m) override;
   void MatrixLoadIdentityCHROMIUM(GLenum matrixMode) override;
   void BlendBarrierKHR() override;
 
  private:
   MojoGLES2Context context_;
 };
 
 }  // namespace mojo
 #endif  // MOJO_GPU_MOJO_GLES2_IMPL_AUTOGEN_H_