Add CopyTexSubImage3D to GPU command buffer.

gpu/command_buffer/client/gles2_interface_stub_impl_autogen.h

Index: gpu/command_buffer/client/gles2_interface_stub_impl_autogen.h
diff --git a/gpu/command_buffer/client/gles2_interface_stub_impl_autogen.h b/gpu/command_buffer/client/gles2_interface_stub_impl_autogen.h
index 59dc75fbc8c81be46c8b68d09f40b8be932153fb..44a0ec1f511b03f49cd7c2d51f97d1ef3cd35414 100644
--- a/gpu/command_buffer/client/gles2_interface_stub_impl_autogen.h
+++ b/gpu/command_buffer/client/gles2_interface_stub_impl_autogen.h
@@ -155,6 +155,16 @@ void GLES2InterfaceStub::CopyTexSubImage2D(GLenum /* target */,
                                            GLsizei /* width */,
                                            GLsizei /* height */) {
 }
+void GLES2InterfaceStub::CopyTexSubImage3D(GLenum /* target */,
+                                           GLint /* level */,
+                                           GLint /* xoffset */,
+                                           GLint /* yoffset */,
+                                           GLint /* zoffset */,
+                                           GLint /* x */,
+                                           GLint /* y */,
+                                           GLsizei /* width */,
+                                           GLsizei /* height */) {
+}
 GLuint GLES2InterfaceStub::CreateProgram() {
   return 0;
 }