Revert of Remove OneClickSigninHelper since it is no longer used.

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 <vector>
 
 #include "base/base64.h"
@@ skipping 61 matching lines @@
 #include "extensions/common/constants.h"
 #include "extensions/common/extension_urls.h"
 #include "extensions/common/manifest_handlers/mime_types_handler.h"
 #include "extensions/common/user_script.h"
 #endif
 
 #if defined(ENABLE_SUPERVISED_USERS)
 #include "chrome/browser/supervised_user/supervised_user_resource_throttle.h"
 #endif
 
+#if defined(ENABLE_ONE_CLICK_SIGNIN)
+#include "chrome/browser/ui/sync/one_click_signin_helper.h"
+#endif
+
 #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"
 #endif
@@ skipping 336 matching lines @@
     bool is_off_the_record = io_data->IsOffTheRecord();
     variations::VariationsHttpHeaderProvider::GetInstance()->
         AppendHeaders(request->url(),
                       is_off_the_record,
                       !is_off_the_record &&
                           io_data->GetMetricsEnabledStateOnIOThread(),
                       &headers);
     request->SetExtraRequestHeaders(headers);
   }
 
+#if defined(ENABLE_ONE_CLICK_SIGNIN)
+  AppendChromeSyncGaiaHeader(request, resource_context);
+#endif
+
 #if defined(ENABLE_CONFIGURATION_POLICY)
   if (io_data->policy_header_helper())
     io_data->policy_header_helper()->AddPolicyHeaders(request->url(), request);
 #endif
 
   signin::AppendMirrorRequestHeaderIfPossible(
       request, GURL() /* redirect_url */, io_data,
       info->GetChildID(), info->GetRouteID());
 
   AppendStandardResourceThrottles(request,
@@ skipping 130 matching lines @@
   if (throttle)
     throttles->push_back(throttle);
 #endif
 
   const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request);
   if (info->GetVisibilityState() == blink::WebPageVisibilityStatePrerender) {
     throttles->push_back(new prerender::PrerenderResourceThrottle(request));
   }
 }
 
+#if defined(ENABLE_ONE_CLICK_SIGNIN)
+void ChromeResourceDispatcherHostDelegate::AppendChromeSyncGaiaHeader(
+    net::URLRequest* request,
+    content::ResourceContext* resource_context) {
+  static const char kAllowChromeSignIn[] = "Allow-Chrome-SignIn";
+
+  ProfileIOData* io_data = ProfileIOData::FromResourceContext(resource_context);
+  OneClickSigninHelper::Offer offer =
+      OneClickSigninHelper::CanOfferOnIOThread(request, io_data);
+  switch (offer) {
+    case OneClickSigninHelper::CAN_OFFER:
+      request->SetExtraRequestHeaderByName(kAllowChromeSignIn, "1", false);
+      break;
+    case OneClickSigninHelper::DONT_OFFER:
+      request->RemoveRequestHeaderByName(kAllowChromeSignIn);
+      break;
+    case OneClickSigninHelper::IGNORE_REQUEST:
+      break;
+  }
+}
+#endif
+
 bool ChromeResourceDispatcherHostDelegate::ShouldForceDownloadResource(
     const GURL& url, const std::string& mime_type) {
 #if defined(ENABLE_EXTENSIONS)
   // Special-case user scripts to get downloaded instead of viewed.
   return extensions::UserScript::IsURLUserScript(url, mime_type);
 #else
   return false;
 #endif
 }
 
@@ skipping 68 matching lines @@
 }
 
 void ChromeResourceDispatcherHostDelegate::OnResponseStarted(
     net::URLRequest* request,
     content::ResourceContext* resource_context,
     content::ResourceResponse* response,
     IPC::Sender* sender) {
   const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request);
   ProfileIOData* io_data = ProfileIOData::FromResourceContext(resource_context);
 
+#if defined(ENABLE_ONE_CLICK_SIGNIN)
+  // See if the response contains the Google-Accounts-SignIn header.  If so,
+  // then the user has just finished signing in, and the server is allowing the
+  // browser to suggest connecting the user's profile to the account.
+  OneClickSigninHelper::ShowInfoBarIfPossible(request, io_data,
+                                              info->GetChildID(),
+                                              info->GetRouteID());
+#endif
+
   // See if the response contains the X-Chrome-Manage-Accounts header. If so
   // show the profile avatar bubble so that user can complete signin/out action
   // the native UI.
   signin::ProcessMirrorResponseHeaderIfExists(request, io_data,
                                               info->GetChildID(),
                                               info->GetRouteID());
 
   // Build in additional protection for the chrome web store origin.
 #if defined(ENABLE_EXTENSIONS)
   GURL webstore_url(extension_urls::GetWebstoreLaunchURL());
@@ skipping 29 matching lines @@
 
 void ChromeResourceDispatcherHostDelegate::OnRequestRedirected(
     const GURL& redirect_url,
     net::URLRequest* request,
     content::ResourceContext* resource_context,
     content::ResourceResponse* response) {
   ProfileIOData* io_data = ProfileIOData::FromResourceContext(resource_context);
 
   const ResourceRequestInfo* info = ResourceRequestInfo::ForRequest(request);
 
+#if defined(ENABLE_ONE_CLICK_SIGNIN)
+  // See if the response contains the Google-Accounts-SignIn header.  If so,
+  // then the user has just finished signing in, and the server is allowing the
+  // browser to suggest connecting the user's profile to the account.
+  OneClickSigninHelper::ShowInfoBarIfPossible(request, io_data,
+                                              info->GetChildID(),
+                                              info->GetRouteID());
+  AppendChromeSyncGaiaHeader(request, resource_context);
+#endif
+
   // In the Mirror world, Chrome should append a X-Chrome-Connected header to
   // all Gaia requests from a connected profile so Gaia could return a 204
   // response and let Chrome handle the action with native UI. The only
   // exception is requests from gaia webview, since the native profile
   // management UI is built on top of it.
   signin::AppendMirrorRequestHeaderIfPossible(request, redirect_url, io_data,
       info->GetChildID(), info->GetRouteID());
 
   if (io_data->resource_prefetch_predictor_observer()) {
     io_data->resource_prefetch_predictor_observer()->OnRequestRedirected(
@@ skipping 21 matching lines @@
                                        url_request->GetTotalReceivedBytes()));
   }
 }
 
 // static
 void ChromeResourceDispatcherHostDelegate::
     SetExternalProtocolHandlerDelegateForTesting(
     ExternalProtocolHandler::Delegate* delegate) {
   g_external_protocol_handler_delegate = delegate;
 }