chrome/browser/media: Change auto to not deduce raw pointers.

chrome/browser/media/tab_desktop_media_list.cc

Index: chrome/browser/media/tab_desktop_media_list.cc
diff --git a/chrome/browser/media/tab_desktop_media_list.cc b/chrome/browser/media/tab_desktop_media_list.cc
index a7b8dd11e7314a72de4f8b048355584dc5ed939d..76a1bb839512bbec99851123f95a128613097068 100644
--- a/chrome/browser/media/tab_desktop_media_list.cc
+++ b/chrome/browser/media/tab_desktop_media_list.cc
@@ -87,7 +87,7 @@ void TabDesktopMediaList::Refresh() {
   std::vector<std::pair<DesktopMediaID, gfx::ImageSkia>> favicon_pairs;
 
   // Enumerate all tabs with their titles and favicons for a user profile.
-  for (auto browser : browsers) {
+  for (auto* browser : browsers) {
     const TabStripModel* tab_strip_model = browser->tab_strip_model();
     DCHECK(tab_strip_model);