Move download extension api implementation to download/ dir.

chrome/chrome_browser.gypi

 # Copyright (c) 2011 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.
 
 {
   'targets': [
     {
       'target_name': 'browser',
       'type': 'static_library',
       'dependencies': [
@@ skipping 887 matching lines @@
         'browser/diagnostics/diagnostics_test.h',
         'browser/diagnostics/recon_diagnostics.cc',
         'browser/diagnostics/recon_diagnostics.h',
         'browser/diagnostics/sqlite_diagnostics.cc',
         'browser/diagnostics/sqlite_diagnostics.h',
         'browser/dom_operation_notification_details.h',
         'browser/download/chrome_download_manager_delegate.cc',
         'browser/download/chrome_download_manager_delegate.h',
         'browser/download/download_crx_util.cc',
         'browser/download/download_crx_util.h',
+        'browser/download/download_extension_api.cc',
+        'browser/download/download_extension_api.h',
         'browser/download/download_extensions.cc',
         'browser/download/download_extensions.h',
         'browser/download/download_file_picker.cc',
         'browser/download/download_file_picker.h',
         'browser/download/download_history.cc',
         'browser/download/download_history.h',
         'browser/download/download_item_model.cc',
         'browser/download/download_item_model.h',
         'browser/download/download_prefs.cc',
         'browser/download/download_prefs.h',
@@ skipping 96 matching lines @@
         'browser/extensions/extension_debugger_api_constants.cc',
         'browser/extensions/extension_debugger_api_constants.h',
         'browser/extensions/extension_devtools_bridge.cc',
         'browser/extensions/extension_devtools_bridge.h',
         'browser/extensions/extension_devtools_events.cc',
         'browser/extensions/extension_devtools_events.h',
         'browser/extensions/extension_devtools_manager.cc',
         'browser/extensions/extension_devtools_manager.h',
         'browser/extensions/extension_disabled_infobar_delegate.cc',
         'browser/extensions/extension_disabled_infobar_delegate.h',
-        'browser/extensions/extension_downloads_api.cc',
-        'browser/extensions/extension_downloads_api.h',
-        'browser/extensions/extension_downloads_api_constants.cc',
-        'browser/extensions/extension_downloads_api_constants.h',
         'browser/extensions/extension_error_reporter.cc',
         'browser/extensions/extension_error_reporter.h',
         'browser/extensions/extension_event_names.cc',
         'browser/extensions/extension_event_names.h',
         'browser/extensions/extension_event_router.cc',
         'browser/extensions/extension_event_router.h',
         'browser/extensions/extension_event_router_forwarder.cc',
         'browser/extensions/extension_event_router_forwarder.h',
         'browser/extensions/extension_file_browser_private_api.cc',
         'browser/extensions/extension_file_browser_private_api.h',
@@ skipping 4216 matching lines @@
       'type': 'static_library',
       'sources': [ 'browser/history/in_memory_url_index_cache.proto' ],
       'variables': {
         'proto_in_dir': 'browser/history',
         'proto_out_dir': 'chrome/browser/history',
       },
       'includes': [ '../build/protoc.gypi' ]
     },
   ],
 }