Allow binding multiple textures to one DC Layer overlay.

gpu/command_buffer/service/gles2_cmd_decoder_passthrough_doers.cc

 // Copyright (c) 2016 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 "gpu/command_buffer/service/gles2_cmd_decoder_passthrough.h"
 
 #include "base/strings/string_number_conversions.h"
 #include "ui/gl/gl_version_info.h"
 
 namespace gpu {
@@ skipping 3635 matching lines @@
     GLfloat opacity,
     GLboolean is_clipped,
     const GLfloat* clip_rect,
     GLint z_order,
     const GLfloat* transform) {
   NOTIMPLEMENTED();
   return error::kNoError;
 }
 
 error::Error GLES2DecoderPassthroughImpl::DoScheduleDCLayerCHROMIUM(
-    GLuint contents_texture_id,
+    GLsizei num_textures,
+    const volatile GLuint* contents_texture_ids,
     const GLfloat* contents_rect,
     GLuint background_color,
     GLuint edge_aa_mask,
     const GLfloat* bounds_rect) {
   NOTIMPLEMENTED();
   return error::kNoError;
 }
 
 error::Error GLES2DecoderPassthroughImpl::DoCommitOverlayPlanesCHROMIUM() {
   NOTIMPLEMENTED();
@@ skipping 306 matching lines @@
 }
 
 error::Error GLES2DecoderPassthroughImpl::DoSetEnableDCLayersCHROMIUM(
     GLboolean enable) {
   NOTIMPLEMENTED();
   return error::kNoError;
 }
 
 }  // namespace gles2
 }  // namespace gpu