Extended: Add "system" URLRequestContext

chrome/browser/intranet_redirect_detector.cc

 // Copyright (c) 2011 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/intranet_redirect_detector.h"
 
 #include "base/command_line.h"
 #include "base/rand_util.h"
 #include "base/stl_util-inl.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/prefs/pref_service.h"
-#include "chrome/browser/profiles/profile.h"
 #include "chrome/common/chrome_switches.h"
+#include "chrome/common/net/url_request_context_getter.h"
 #include "chrome/common/pref_names.h"
 #include "content/common/notification_service.h"
 #include "net/base/load_flags.h"
 #include "net/base/net_errors.h"
 #include "net/base/registry_controlled_domain.h"
 #include "net/url_request/url_request_status.h"
 
 const size_t IntranetRedirectDetector::kNumCharsInHostnames = 10;
 
 IntranetRedirectDetector::IntranetRedirectDetector()
     : redirect_origin_(g_browser_process->local_state()->GetString(
           prefs::kLastKnownIntranetRedirectOrigin)),
       ALLOW_THIS_IN_INITIALIZER_LIST(fetcher_factory_(this)),
-      in_sleep_(true),
-      request_context_available_(Profile::GetDefaultRequestContext() != NULL) {
-  registrar_.Add(this, NotificationType::DEFAULT_REQUEST_CONTEXT_AVAILABLE,
-                 NotificationService::AllSources());
-
+      in_sleep_(true) {
   // Because this function can be called during startup, when kicking off a URL
   // fetch can eat up 20 ms of time, we delay seven seconds, which is hopefully
   // long enough to be after startup, but still get results back quickly.
   // Ideally, instead of this timer, we'd do something like "check if the
   // browser is starting up, and if so, come back later", but there is currently
   // no function to do this.
   static const int kStartFetchDelayMS = 7000;
   MessageLoop::current()->PostDelayedTask(FROM_HERE,
       fetcher_factory_.NewRunnableMethod(
           &IntranetRedirectDetector::FinishSleep),
@@ skipping 20 matching lines @@
                             std::string());
 }
 
 void IntranetRedirectDetector::FinishSleep() {
   in_sleep_ = false;
 
   // If another fetch operation is still running, cancel it.
   STLDeleteElements(&fetchers_);
   resulting_origins_.clear();
 
-  StartFetchesIfPossible();
-}
-
-void IntranetRedirectDetector::StartFetchesIfPossible() {
-  // Bail if a fetch isn't appropriate right now.  This function will be called
-  // again each time one of the preconditions changes, so we'll fetch
-  // immediately once all of them are met.
-  if (in_sleep_ || !request_context_available_)
-    return;
-
   // The detector is not needed in Chrome Frame since we have no omnibox there.
   const CommandLine* cmd_line = CommandLine::ForCurrentProcess();
   if (cmd_line->HasSwitch(switches::kDisableBackgroundNetworking) ||
       cmd_line->HasSwitch(switches::kChromeFrame))
     return;
 
   DCHECK(fetchers_.empty() && resulting_origins_.empty());
 
   // Start three fetchers on random hostnames.
   for (size_t i = 0; i < 3; ++i) {
     std::string url_string("http://");
     for (size_t j = 0; j < kNumCharsInHostnames; ++j)
       url_string += ('a' + base::RandInt(0, 'z' - 'a'));
     GURL random_url(url_string + '/');
     URLFetcher* fetcher = new URLFetcher(random_url, URLFetcher::HEAD, this);
     // We don't want these fetches to affect existing state in the profile.
     fetcher->set_load_flags(net::LOAD_DISABLE_CACHE |
                             net::LOAD_DO_NOT_SAVE_COOKIES);
-    fetcher->set_request_context(Profile::GetDefaultRequestContext());
+    fetcher->set_request_context(g_browser_process->system_request_context());
     fetcher->Start();
     fetchers_.insert(fetcher);
   }
 }
 
 void IntranetRedirectDetector::OnURLFetchComplete(
     const URLFetcher* source,
     const GURL& url,
     const net::URLRequestStatus& status,
     int response_code,
@@ skipping 39 matching lines @@
     DCHECK(resulting_origins_.size() == 2);
     redirect_origin_ = net::RegistryControlledDomainService::SameDomainOrHost(
         resulting_origins_.back(), origin) ? origin : GURL();
   }
 
   g_browser_process->local_state()->SetString(
       prefs::kLastKnownIntranetRedirectOrigin, redirect_origin_.is_valid() ?
           redirect_origin_.spec() : std::string());
 }
 
-void IntranetRedirectDetector::Observe(NotificationType type,
-                                       const NotificationSource& source,
-                                       const NotificationDetails& details) {
-  DCHECK_EQ(NotificationType::DEFAULT_REQUEST_CONTEXT_AVAILABLE, type.value);
-  request_context_available_ = true;
-  StartFetchesIfPossible();
-}
-
 void IntranetRedirectDetector::OnIPAddressChanged() {
   // If a request is already scheduled, do not scheduled yet another one.
   if (in_sleep_)
     return;
 
   // Since presumably many programs open connections after network changes,
   // delay this a little bit.
   in_sleep_ = true;
   static const int kNetworkSwitchDelayMS = 1000;
   MessageLoop::current()->PostDelayedTask(FROM_HERE,
@@ skipping 17 matching lines @@
   // the same thread.  So just use the heuristic that any all-lowercase a-z
   // hostname with the right number of characters is likely from the detector
   // (and thus should be blocked).
   return ((host.length() == IntranetRedirectDetector::kNumCharsInHostnames) &&
       (host.find_first_not_of("abcdefghijklmnopqrstuvwxyz") ==
           std::string::npos)) ?
       net::ERR_NAME_NOT_RESOLVED :
       ResolveUsingPrevious(host, address_family, host_resolver_flags, addrlist,
                            os_error);
 }