Add CopyTexSubImage3D to GPU command buffer.

gpu/command_buffer/client/gles2_c_lib_autogen.h

Index: gpu/command_buffer/client/gles2_c_lib_autogen.h
diff --git a/gpu/command_buffer/client/gles2_c_lib_autogen.h b/gpu/command_buffer/client/gles2_c_lib_autogen.h
index 0158cf64ea64e82d80983719b084e86cd4b38dcf..383452736099fe4650baf8e677161e5c7e3b4a9b 100644
--- a/gpu/command_buffer/client/gles2_c_lib_autogen.h
+++ b/gpu/command_buffer/client/gles2_c_lib_autogen.h
@@ -181,6 +181,18 @@ void GLES2CopyTexSubImage2D(GLenum target,
   gles2::GetGLContext()->CopyTexSubImage2D(target, level, xoffset, yoffset, x,
                                            y, width, height);
 }
+void GLES2CopyTexSubImage3D(GLenum target,
+                            GLint level,
+                            GLint xoffset,
+                            GLint yoffset,
+                            GLint zoffset,
+                            GLint x,
+                            GLint y,
+                            GLsizei width,
+                            GLsizei height) {
+  gles2::GetGLContext()->CopyTexSubImage3D(target, level, xoffset, yoffset,
+                                           zoffset, x, y, width, height);
+}
 GLuint GLES2CreateProgram() {
   return gles2::GetGLContext()->CreateProgram();
 }
@@ -1364,6 +1376,10 @@ extern const NameToFunc g_gles2_function_table[] = {
      reinterpret_cast<GLES2FunctionPointer>(glCopyTexSubImage2D),
     },
     {
+     "glCopyTexSubImage3D",
+     reinterpret_cast<GLES2FunctionPointer>(glCopyTexSubImage3D),
+    },
+    {
      "glCreateProgram",
      reinterpret_cast<GLES2FunctionPointer>(glCreateProgram),
     },