Allow binding multiple textures to one DC Layer overlay.

gpu/command_buffer/service/gles2_cmd_decoder_passthrough_handlers.cc

Index: gpu/command_buffer/service/gles2_cmd_decoder_passthrough_handlers.cc
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder_passthrough_handlers.cc b/gpu/command_buffer/service/gles2_cmd_decoder_passthrough_handlers.cc
index 50e2cbfde3ae94b92d6e7f21fa4c578d7ff52216..f6b65235edb095fbb2d884d2ce2e101bdfa3dfc1 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder_passthrough_handlers.cc
+++ b/gpu/command_buffer/service/gles2_cmd_decoder_passthrough_handlers.cc
@@ -1816,14 +1816,12 @@ error::Error GLES2DecoderPassthroughImpl::HandleScheduleDCLayerCHROMIUM(
   if (!mem) {
     return error::kOutOfBounds;
   }
-  GLuint contents_texture_id = static_cast<GLint>(c.contents_texture_id);
   const GLfloat* contents_rect = mem;
   GLuint background_color = static_cast<GLuint>(c.background_color);
   GLuint edge_aa_mask = static_cast<GLuint>(c.edge_aa_mask);
   const GLfloat* bounds_rect = mem + 4;
-  error::Error error =
-      DoScheduleDCLayerCHROMIUM(contents_texture_id, contents_rect,
-                                background_color, edge_aa_mask, bounds_rect);
+  error::Error error = DoScheduleDCLayerCHROMIUM(
+      contents_rect, background_color, edge_aa_mask, bounds_rect);
   if (error != error::kNoError) {
     return error;
   }