Make `content` target build without unused data members on Linux.

components/bitmap_uploader/bitmap_uploader.cc

 // Copyright 2015 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 "components/bitmap_uploader/bitmap_uploader.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 26 matching lines @@
     "__BITMAP_UPLOADER_ACCELERATED_WIDGET__";
 
 BitmapUploader::BitmapUploader(mus::Window* window)
     : window_(window),
       color_(g_transparent_color),
       width_(0),
       height_(0),
       format_(BGRA),
       next_resource_id_(1u),
       id_namespace_(0u),
-      local_id_(0u),
       surface_client_binding_(this) {}
 
 BitmapUploader::~BitmapUploader() {
   MojoGLES2DestroyContext(gles2_context_);
 }
 
 void BitmapUploader::Init(mojo::Shell* shell) {
   surface_ = window_->RequestSurface(mus::mojom::SURFACE_TYPE_DEFAULT);
   surface_->BindToThread();
 
@@ skipping 199 matching lines @@
     glWaitSyncTokenCHROMIUM(
         resource->sync_token.To<gpu::SyncToken>().GetConstData());
     uint32_t texture_id = resource_to_texture_id_map_[resource->id];
     DCHECK_NE(0u, texture_id);
     resource_to_texture_id_map_.erase(resource->id);
     glDeleteTextures(1, &texture_id);
   }
 }
 
 }  // namespace bitmap_uploader