Run clang-modernize -use-nullptr over src/extensions/.

extensions/browser/guest_view/guest_view_manager.cc

Index: extensions/browser/guest_view/guest_view_manager.cc
diff --git a/extensions/browser/guest_view/guest_view_manager.cc b/extensions/browser/guest_view/guest_view_manager.cc
index 77a46c6ab4b7095bb86e07b3df20b76d7478646b..679099aaaecfe0de696ef627f28c548bb63ade3c 100644
--- a/extensions/browser/guest_view/guest_view_manager.cc
+++ b/extensions/browser/guest_view/guest_view_manager.cc
@@ -26,7 +26,7 @@ using content::WebContents;
 namespace extensions {
 
 // static
-GuestViewManagerFactory* GuestViewManager::factory_ = NULL;
+GuestViewManagerFactory* GuestViewManager::factory_ = nullptr;
 
 GuestViewManager::GuestViewManager(content::BrowserContext* context)
     : current_instance_id_(0), last_instance_id_removed_(0), context_(context) {
@@ -56,7 +56,7 @@ content::WebContents* GuestViewManager::GetGuestByInstanceIDSafely(
     int embedder_render_process_id) {
   if (!CanEmbedderAccessInstanceIDMaybeKill(embedder_render_process_id,
                                             guest_instance_id)) {
-    return NULL;
+    return nullptr;
   }
   return GetGuestByInstanceID(guest_instance_id);
 }
@@ -121,7 +121,7 @@ void GuestViewManager::CreateGuest(const std::string& view_type,
   GuestViewBase* guest =
       GuestViewBase::Create(context_, guest_instance_id, view_type);
   if (!guest) {
-    callback.Run(NULL);
+    callback.Run(nullptr);
     return;
   }
   guest->Init(
@@ -137,7 +137,7 @@ content::WebContents* GuestViewManager::CreateGuestWithWebContentsParams(
   GuestViewBase* guest =
       GuestViewBase::Create(context_, guest_instance_id, view_type);
   if (!guest)
-    return NULL;
+    return nullptr;
   content::WebContents::CreateParams guest_create_params(create_params);
   guest_create_params.guest_delegate = guest;
   content::WebContents* guest_web_contents =
@@ -154,7 +154,7 @@ content::WebContents* GuestViewManager::GetGuestByInstanceID(
   int guest_instance_id = GetGuestInstanceIDForElementID(embedder_web_contents,
                                                          element_instance_id);
   if (guest_instance_id == guestview::kInstanceIDNone)
-    return NULL;
+    return nullptr;
 
   return GetGuestByInstanceID(guest_instance_id);
 }
@@ -177,7 +177,7 @@ SiteInstance* GuestViewManager::GetGuestSiteInstance(
     if (it->second->GetSiteInstance()->GetSiteURL() == guest_site)
       return it->second->GetSiteInstance();
   }
-  return NULL;
+  return nullptr;
 }
 
 bool GuestViewManager::ForEachGuest(WebContents* embedder_web_contents,
@@ -246,7 +246,7 @@ content::WebContents* GuestViewManager::GetGuestByInstanceID(
   GuestInstanceMap::const_iterator it =
       guest_web_contents_by_instance_id_.find(guest_instance_id);
   if (it == guest_web_contents_by_instance_id_.end())
-    return NULL;
+    return nullptr;
   return it->second;
 }