components: Change auto to not deduce raw pointers.

components/guest_view/browser/guest_view_message_filter.cc

Index: components/guest_view/browser/guest_view_message_filter.cc
diff --git a/components/guest_view/browser/guest_view_message_filter.cc b/components/guest_view/browser/guest_view_message_filter.cc
index c1f65906caf0f3378df1302dbd619f69c3a9a0bf..4213918d3f9d54806fd3be941a9ba544e6714550 100644
--- a/components/guest_view/browser/guest_view_message_filter.cc
+++ b/components/guest_view/browser/guest_view_message_filter.cc
@@ -49,7 +49,7 @@ GuestViewMessageFilter::~GuestViewMessageFilter() {
 }
 
 GuestViewManager* GuestViewMessageFilter::GetOrCreateGuestViewManager() {
-  auto manager = GuestViewManager::FromBrowserContext(browser_context_);
+  auto* manager = GuestViewManager::FromBrowserContext(browser_context_);
   if (!manager) {
     manager = GuestViewManager::CreateWithDelegate(
         browser_context_, base::WrapUnique(
@@ -103,7 +103,7 @@ void GuestViewMessageFilter::OnAttachGuest(
     int guest_instance_id,
     const base::DictionaryValue& params) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  auto manager = GuestViewManager::FromBrowserContext(browser_context_);
+  auto* manager = GuestViewManager::FromBrowserContext(browser_context_);
   // We should have a GuestViewManager at this point. If we don't then the
   // embedder is misbehaving.
   if (!manager)