[Android] Upstream WebView.allow{Content|File}Access implementation.

android_webview/native/android_protocol_handler.cc

 // 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.
 
 // URL request job for reading from resources and assets.
 
 #include "android_webview/native/android_protocol_handler.h"
 
 #include "android_webview/common/url_constants.h"
 #include "android_webview/native/android_stream_reader_url_request_job.h"
@@ skipping 104 matching lines @@
 bool RegisterAndroidProtocolHandler(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 // static
 void AndroidProtocolHandler::RegisterProtocols(
     net::URLRequestContextGetter* context_getter) {
   // Register content://. Note that even though a scheme is
   // registered here, it cannot be used by child processes until access to it is
   // granted via ChildProcessSecurityPolicy::GrantScheme(). This is done in
-  // RenderViewHost.
+  // AwContentBrowserClient.
   // TODO(mnaganov): Convert into a ProtocolHandler.
   net::URLRequestJobManager* job_manager =
       net::URLRequestJobManager::GetInstance();
   job_manager->RegisterProtocolFactory(android_webview::kContentScheme,
       &AndroidProtocolHandler::Factory);
 
   // Register a file: scheme interceptor for application assets.
   context_getter->GetNetworkTaskRunner()->PostTask(
       FROM_HERE,
       base::Bind(&AddFileSchemeInterceptorOnIOThread,
@@ skipping 140 matching lines @@
     net::URLRequest* request,
     net::NetworkDelegate* network_delegate) const {
   return NULL;
 }
 
 net::URLRequestJob* AssetFileProtocolInterceptor::MaybeInterceptResponse(
     net::URLRequest* request,
     net::NetworkDelegate* network_delegate) const {
   return NULL;
 }