Add a Content API around BrowserURLHandler.

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 22 matching lines @@
     'public/browser/browser_child_process_host_delegate.cc',
     'public/browser/browser_child_process_host_delegate.h',
     'public/browser/browser_child_process_host_iterator.cc',
     'public/browser/browser_child_process_host_iterator.h',
     'public/browser/browser_context.h',
     'public/browser/browser_main_parts.h',
     'public/browser/browser_main_runner.h',
     'public/browser/browser_message_filter.cc',
     'public/browser/browser_message_filter.h',
     'public/browser/browser_shutdown.h',
+    'public/browser/browser_url_handler.h',
     'public/browser/browser_thread.h',
     'public/browser/browser_thread_delegate.h',
     'public/browser/child_process_data.h',
     'public/browser/child_process_security_policy.h',
     'public/browser/content_browser_client.h',
     'public/browser/content_ipc_logging.h',
     'public/browser/devtools_agent_host_registry.h',
     'public/browser/devtools_client_host.h',
     'public/browser/download_danger_type.h',
     'public/browser/download_id.h',
@@ skipping 122 matching lines @@
     'browser/browser_context.cc',
     'browser/browser_main.cc',
     'browser/browser_main.h',
     'browser/browser_main_loop.cc',
     'browser/browser_main_loop.h',
     'browser/browser_main_runner.cc',
     'browser/browser_process_sub_thread.cc',
     'browser/browser_process_sub_thread.h',
     'browser/browser_thread_impl.cc',
     'browser/browser_thread_impl.h',
-    'browser/browser_url_handler.cc',
-    'browser/browser_url_handler.h',
+    'browser/browser_url_handler_impl.cc',
+    'browser/browser_url_handler_impl.h',
     'browser/browsing_instance.cc',
     'browser/browsing_instance.h',
     'browser/cert_store.cc',
     'browser/cert_store.h',
     'browser/child_process_launcher.cc',
     'browser/child_process_launcher.h',
     'browser/child_process_security_policy_impl.cc',
     'browser/child_process_security_policy_impl.h',
     'browser/content_ipc_logging.cc',
     'browser/cross_site_request_manager.cc',
@@ skipping 691 matching lines @@
       ],
     }],
     ['input_speech==0', {
       'sources/': [
         ['exclude', '^browser/speech/'],
       ],
     }],
   ],
 }