Pull gpu CmdBuf service/client shared GpuMemoryBuffer code to common

mojo/gles2/BUILD.gn

 # 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.
 
 config("mojo_use_gles2") {
   defines = [ "MOJO_USE_GLES2_IMPL" ]
 }
 
 config("gles2_use_mojo") {
   defines = [ "GLES2_USE_MOJO" ]
@@ skipping 37 matching lines @@
     "//gpu/command_buffer/client:gles2_cmd_helper",
     "//gpu/command_buffer/client:gles2_implementation",
     "//gpu/command_buffer/client:gles2_interface",
     "//gpu/command_buffer/common",
     "//mojo/platform_handle:for_component",
     "//mojo/public/c/system:for_component",
     "//mojo/public/cpp/bindings",
     "//mojo/public/cpp/system",
   ]
 
-  if (!is_component_build) {
-    deps += [ "//gpu/command_buffer/service" ]
-  }
-
   include_dirs = [ ".." ]
 }