Convert plugin and GPU process to brokered handle duplication.

BUG=119250
Review URL: https://chromiumcodereview.appspot.com/9958034

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@132303 0039d316-1c4b-4281-b951-d872f2087c98
  CreateViewCommandBufferRequest(
      int32 surface_id_,
      const GPUCreateCommandBufferConfig& init_params_,
      IPC::Message* reply_)
      : surface_id(surface_id_),
        init_params(init_params_),
        reply(reply_) {
  }

  CreateViewCommandBufferRequest(
      int32 surface_id_,
      const GPUCreateCommandBufferConfig& init_params_,
      IPC::Message* reply_)
      : surface_id(surface_id_),
        init_params(init_params_),
        reply(reply_) {
  }
