refactor: prevent RemoveFromLoginItems() from mounting volumes from login items (#34107)

Co-authored-by: Shelley Vohr <[email protected]>

shell/browser/browser_mac.mm

@@ -314,26 +314,32 @@ Browser::LoginItemSettings Browser::GetLoginItemSettings(
   return settings;
 }
 
+// Some logic here copied from GetLoginItemForApp in base/mac/mac_util.mm
 void RemoveFromLoginItems() {
 #pragma clang diagnostic push  // https://crbug.com/1154377
 #pragma clang diagnostic ignored "-Wdeprecated-declarations"
-  // logic to find the login item copied from GetLoginItemForApp in
-  // base/mac/mac_util.mm
   base::ScopedCFTypeRef<LSSharedFileListRef> login_items(
       LSSharedFileListCreate(NULL, kLSSharedFileListSessionLoginItems, NULL));
   if (!login_items.get()) {
     LOG(ERROR) << "Couldn't get a Login Items list.";
     return;
   }
+
   base::scoped_nsobject<NSArray> login_items_array(
       base::mac::CFToNSCast(LSSharedFileListCopySnapshot(login_items, NULL)));
   NSURL* url = [NSURL fileURLWithPath:[base::mac::MainBundle() bundlePath]];
-  for (NSUInteger i = 0; i < [login_items_array count]; ++i) {
+  for (id login_item in login_items_array.get()) {
     LSSharedFileListItemRef item =
-        reinterpret_cast<LSSharedFileListItemRef>(login_items_array[i]);
+        reinterpret_cast<LSSharedFileListItemRef>(login_item);
+
+    // kLSSharedFileListDoNotMountVolumes is used so that we don't trigger
+    // mounting when it's not expected by a user. Just listing the login
+    // items should not cause any side-effects.
     base::ScopedCFTypeRef<CFErrorRef> error;
-    CFURLRef item_url_ref =
-        LSSharedFileListItemCopyResolvedURL(item, 0, error.InitializeInto());
+    base::ScopedCFTypeRef<CFURLRef> item_url_ref(
+        LSSharedFileListItemCopyResolvedURL(
+            item, kLSSharedFileListDoNotMountVolumes, error.InitializeInto()));
+
     if (!error && item_url_ref) {
       base::ScopedCFTypeRef<CFURLRef> item_url(item_url_ref);
       if (CFEqual(item_url, url)) {