Move font_list_async.h to content/public. Switch to Pass() goodness to simplify code.

content/content_browser.gypi

 # 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.
 
 {
   'dependencies': [
     'browser/debugger/devtools_resources.gyp:devtools_resources',
     '../base/base.gyp:base_static',
     '../crypto/crypto.gyp:crypto',
     '../net/net.gyp:http_server',
@@ skipping 44 matching lines @@
     'public/browser/devtools_http_handler_delegate.h',
     'public/browser/devtools_manager.h',
     'public/browser/dom_operation_notification_details.h',
     'public/browser/dom_storage_context.h',
     'public/browser/download_item.h',
     'public/browser/download_manager.h',
     'public/browser/download_manager_delegate.cc',
     'public/browser/download_manager_delegate.h',
     'public/browser/favicon_status.cc',
     'public/browser/favicon_status.h',
+    'public/browser/font_list_async.h',
     'public/browser/geolocation_permission_context.h',
     'public/browser/global_request_id.h',
     'public/browser/gpu_data_manager.h',
     'public/browser/gpu_data_manager_observer.h',
     'public/browser/host_zoom_map.h',
     'public/browser/indexed_db_context.h',
     'public/browser/interstitial_page.h',
     'public/browser/invalidate_type.h',
     'public/browser/javascript_dialogs.h',
     'public/browser/native_web_keyboard_event.h',
@@ skipping 186 matching lines @@
     'browser/download/save_types.h',
     'browser/file_metadata_mac.h',
     'browser/file_metadata_mac.mm',
     'browser/file_system/browser_file_system_helper.cc',
     'browser/file_system/browser_file_system_helper.h',
     'browser/file_system/file_system_dispatcher_host.cc',
     'browser/file_system/file_system_dispatcher_host.h',
     'browser/find_pasteboard.h',
     'browser/find_pasteboard.mm',
     'browser/font_list_async.cc',
-    'browser/font_list_async.h',
     'browser/gamepad/data_fetcher.h',
     'browser/gamepad/gamepad_provider.cc',
     'browser/gamepad/gamepad_provider.h',
     'browser/gamepad/gamepad_service.cc',
     'browser/gamepad/gamepad_service.h',
     'browser/gamepad/gamepad_standard_mappings.h',
     'browser/gamepad/gamepad_standard_mappings_linux.cc',
     'browser/gamepad/gamepad_standard_mappings_mac.mm',
     'browser/gamepad/platform_data_fetcher.h',
     'browser/gamepad/platform_data_fetcher_linux.cc',
@@ skipping 580 matching lines @@
       ],
     }],
     ['input_speech==0', {
       'sources/': [
         ['exclude', '^browser/speech/'],
       ],
     }],
   ],
 }