PlzNavigate: Fixes ChromeOS navigation to google drive files.

content/browser/frame_host/render_frame_host_impl.cc

 // Copyright 2013 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 "content/browser/frame_host/render_frame_host_impl.h"
 
 #include <algorithm>
 #include <utility>
 
 #include "base/bind.h"
@@ skipping 3570 matching lines @@
     const ResourceRequestBodyImpl& body) {
   GrantFileAccess(GetProcess()->GetID(), body.GetReferencedFiles());
 }
 
 void RenderFrameHostImpl::UpdatePermissionsForNavigation(
     const CommonNavigationParams& common_params,
     const RequestNavigationParams& request_params) {
   // Browser plugin guests are not allowed to navigate outside web-safe schemes,
   // so do not grant them the ability to request additional URLs.
   if (!GetProcess()->IsForGuestsOnly()) {
+    for (const GURL& url : request_params.redirects) {
+      ChildProcessSecurityPolicyImpl::GetInstance()->GrantRequestURL(
+          GetProcess()->GetID(), url);

[nasko, 2017/05/23 04:39:34]

It seems a bit more prudent to grant access to the original_url. I'm not sure if
granting access to the full redirect chain is a reasonable thing. Let's start
with original_url, which should allow for the CromeOS issue to be resolved.

+    }
     ChildProcessSecurityPolicyImpl::GetInstance()->GrantRequestURL(
         GetProcess()->GetID(), common_params.url);
     if (common_params.url.SchemeIs(url::kDataScheme) &&
         !common_params.base_url_for_data_url.is_empty()) {
       // When there's a base URL specified for the data URL, we also need to
       // grant access to the base URL. This allows file: and other unexpected
       // schemes to be accepted at commit time and during CORS checks (e.g., for
       // font requests).
       ChildProcessSecurityPolicyImpl::GetInstance()->GrantRequestURL(
           GetProcess()->GetID(), common_params.base_url_for_data_url);
@@ skipping 382 matching lines @@
 }
 
 void RenderFrameHostImpl::ForwardGetInterfaceToRenderFrame(
     const std::string& interface_name,
     mojo::ScopedMessagePipeHandle pipe) {
   GetRemoteInterfaces()->GetInterface(interface_name, std::move(pipe));
 }
 #endif
 
 }  // namespace content