Make RenderPass::Id an isolated class

cc/cc.gyp

 # Copyright (c) 2012 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 306 matching lines @@
         'quads/draw_quad.h',
         'quads/io_surface_draw_quad.cc',
         'quads/io_surface_draw_quad.h',
         'quads/largest_draw_quad.h',
         'quads/picture_draw_quad.cc',
         'quads/picture_draw_quad.h',
         'quads/render_pass.cc',
         'quads/render_pass.h',
         'quads/render_pass_draw_quad.cc',
         'quads/render_pass_draw_quad.h',
+        'quads/render_pass_id.cc',
+        'quads/render_pass_id.h',
         'quads/shared_quad_state.cc',
         'quads/shared_quad_state.h',
         'quads/solid_color_draw_quad.cc',
         'quads/solid_color_draw_quad.h',
         'quads/stream_video_draw_quad.cc',
         'quads/stream_video_draw_quad.h',
         'quads/surface_draw_quad.cc',
         'quads/surface_draw_quad.h',
         'quads/texture_draw_quad.cc',
         'quads/texture_draw_quad.h',
@@ skipping 185 matching lines @@
         'surfaces/surface_id_allocator.h',
         'surfaces/surface_manager.cc',
         'surfaces/surface_manager.h',
         'surfaces/surface_resource_holder.cc',
         'surfaces/surface_resource_holder.h',
         'surfaces/surfaces_export.h',
       ],
     },
   ],
 }