"Redirecting URLs to Packaged Apps" implementation: revised

chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.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.
 
 #include "chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "base/logging.h"
@@ skipping 46 matching lines @@
 
 #if defined(USE_SYSTEM_PROTOBUF)
 #include <google/protobuf/repeated_field.h>
 #else
 #include "third_party/protobuf/src/google/protobuf/repeated_field.h"
 #endif
 
 #if defined(OS_ANDROID)
 #include "chrome/browser/android/intercept_download_resource_throttle.h"
 #include "components/navigation_interception/intercept_navigation_delegate.h"
+#else
+#include "chrome/browser/apps/app_url_redirector.h"
 #endif
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/login/merge_session_throttle.h"
 // TODO(oshima): Enable this for other platforms.
 #include "chrome/browser/renderer_host/offline_resource_throttle.h"
 #endif
 
 using content::BrowserThread;
 using content::RenderViewHost;
@@ skipping 178 matching lines @@
 
   ChromeURLRequestUserData* user_data =
       ChromeURLRequestUserData::Create(request);
   bool is_prerendering = prerender_tracker_->IsPrerenderingOnIOThread(
       child_id, route_id);
   if (is_prerendering) {
     user_data->set_is_prerender(true);
     request->SetPriority(net::IDLE);
   }
 
+  ProfileIOData* io_data = ProfileIOData::FromResourceContext(
+      resource_context);
+
+  if (!is_prerendering && resource_type == ResourceType::MAIN_FRAME) {
 #if defined(OS_ANDROID)
-  if (!is_prerendering && resource_type == ResourceType::MAIN_FRAME) {
     throttles->push_back(
         InterceptNavigationDelegate::CreateThrottleFor(request));
+#else
+    // Redirect some navigations to apps that have registered matching URL
+    // handlers ('url_handlers' in the manifest).
+    content::ResourceThrottle* url_to_app_throttle =
+        AppUrlRedirector::MaybeCreateThrottleFor(request, io_data);
+    if (url_to_app_throttle)
+      throttles->push_back(url_to_app_throttle);
+#endif
   }
-#endif
+
 #if defined(OS_CHROMEOS)
   if (resource_type == ResourceType::MAIN_FRAME) {
     // We check offline first, then check safe browsing so that we still can
     // block unsafe site after we remove offline page.
     throttles->push_back(new OfflineResourceThrottle(
         child_id, route_id, request, appcache_service));
     // Add interstitial page while merge session process (cookie
     // reconstruction from OAuth2 refresh token in ChromeOS login) is still in
     // progress while we are attempting to load a google property.
     throttles->push_back(new MergeSessionThrottle(
         child_id, route_id, request));
   }
 #endif
 
   // Don't attempt to append headers to requests that have already started.
   // TODO(stevet): Remove this once the request ordering issues are resolved
   // in crbug.com/128048.
   if (!request->is_pending()) {
     net::HttpRequestHeaders headers;
     headers.CopyFrom(request->extra_request_headers());
-    ProfileIOData* io_data = ProfileIOData::FromResourceContext(
-        resource_context);
     bool incognito = io_data->is_incognito();
     chrome_variations::VariationsHttpHeaderProvider::GetInstance()->
         AppendHeaders(request->url(),
                       incognito,
                       !incognito && io_data->GetMetricsEnabledStateOnIOThread(),
                       &headers);
     request->SetExtraRequestHeaders(headers);
   }
 
 #if defined(ENABLE_ONE_CLICK_SIGNIN)
   AppendChromeSyncGaiaHeader(request, resource_context);
 #endif
 
   AppendStandardResourceThrottles(request,
                                   resource_context,
                                   child_id,
                                   route_id,
                                   resource_type,
                                   throttles);
 
-  ProfileIOData* io_data = ProfileIOData::FromResourceContext(resource_context);
   if (io_data->resource_prefetch_predictor_observer()) {
     io_data->resource_prefetch_predictor_observer()->OnRequestStarted(
         request, resource_type, child_id, route_id);
   }
 }
 
 void ChromeResourceDispatcherHostDelegate::DownloadStarting(
     net::URLRequest* request,
     content::ResourceContext* resource_context,
     int child_id,
@@ skipping 313 matching lines @@
   if (!prerender::PrerenderManager::DoesURLHaveValidScheme(redirect_url) &&
       ResourceRequestInfo::ForRequest(request)->GetAssociatedRenderView(
           &child_id, &route_id) &&
       prerender_tracker_->IsPrerenderingOnIOThread(child_id, route_id)) {
     ReportUnsupportedPrerenderScheme(redirect_url);
     prerender_tracker_->TryCancel(
         child_id, route_id, prerender::FINAL_STATUS_UNSUPPORTED_SCHEME);
     request->Cancel();
   }
 }