Automatically retry the following URLFetchers when the network changes:

google_apis/gaia/gaia_oauth_client.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 "google_apis/gaia/gaia_oauth_client.h"
 
 #include "base/json/json_reader.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/values.h"
@@ skipping 111 matching lines @@
   request_type_ = USER_INFO;
   delegate_ = delegate;
   num_retries_ = 0;
   request_.reset(net::URLFetcher::Create(
       0, GURL(GaiaUrls::GetInstance()->oauth_user_info_url()),
       net::URLFetcher::GET, this));
   request_->SetRequestContext(request_context_getter_);
   request_->AddExtraRequestHeader(
       "Authorization: OAuth " + oauth_access_token);
   request_->SetMaxRetriesOn5xx(max_retries);
+  // Fetchers are sometimes cancelled because a network change was detected,
+  // especially at startup and after sign-in on ChromeOS. Retrying once should
+  // be enough in those cases; let the fetcher retry up to 3 times just in case.
+  // http://crbug.com/163710
+  request_->SetAutomaticallyRetryOnNetworkChanges(3);
   request_->Start();
 }
 
 void GaiaOAuthClient::Core::MakeGaiaRequest(
     const std::string& post_body,
     int max_retries,
     GaiaOAuthClient::Delegate* delegate) {
   DCHECK(!request_.get()) << "Tried to fetch two things at once!";
   delegate_ = delegate;
   num_retries_ = 0;
   request_.reset(net::URLFetcher::Create(
       0, gaia_url_, net::URLFetcher::POST, this));
   request_->SetRequestContext(request_context_getter_);
   request_->SetUploadData("application/x-www-form-urlencoded", post_body);
   request_->SetMaxRetriesOn5xx(max_retries);
+  // See comment on SetAutomaticallyRetryOnNetworkChanges() above.
+  request_->SetAutomaticallyRetryOnNetworkChanges(3);
   request_->Start();
 }
 
 // URLFetcher::Delegate implementation.
 void GaiaOAuthClient::Core::OnURLFetchComplete(
     const net::URLFetcher* source) {
   bool should_retry = false;
   HandleResponse(source, &should_retry);
   if (should_retry) {
     // Explicitly call ReceivedContentWasMalformed() to ensure the current
@@ skipping 118 matching lines @@
                              delegate);
 }
 
 void GaiaOAuthClient::GetUserInfo(const std::string& access_token,
                                   int max_retries,
                                   Delegate* delegate) {
   return core_->GetUserInfo(access_token, max_retries, delegate);
 }
 
 }  // namespace gaia