BASELINE: Update Chromium to 73.0.3683.37

Change-Id: I08c9af2948b645f671e5d933aca1f7a90ea372f2
Reviewed-by: Michael Brüning <michael.bruning@qt.io>

1 files changed, 4 insertions, 9 deletions

diff --git a/chromium/third_party/blink/renderer/core/css/shadow_tree_style_sheet_collection.cc b/chromium/third_party/blink/renderer/core/css/shadow_tree_style_sheet_collection.cc
index 8a8867ac811..f8b4cb0acfc 100644
--- a/chromium/third_party/blink/renderer/core/css/shadow_tree_style_sheet_collection.cc
+++ b/chromium/third_party/blink/renderer/core/css/shadow_tree_style_sheet_collection.cc
@@ -65,17 +65,12 @@ void ShadowTreeStyleSheetCollection::CollectStyleSheets(
   if (!GetTreeScope().HasAdoptedStyleSheets())
     return;
 
-  StyleSheetList& adopted_style_sheets = GetTreeScope().AdoptedStyleSheets();
-  unsigned length = adopted_style_sheets.length();
-  for (unsigned index = 0; index < length; ++index) {
-    StyleSheet* sheet = adopted_style_sheets.item(index);
-    if (!sheet)
-      continue;
-    CSSStyleSheet* css_sheet = ToCSSStyleSheet(sheet);
-    if (!css_sheet || !css_sheet->CanBeActivated(g_null_atom))
+  for (CSSStyleSheet* sheet : GetTreeScope().AdoptedStyleSheets()) {
+    if (!sheet || !sheet->CanBeActivated(g_null_atom))
       continue;
+    DCHECK_EQ(GetTreeScope().GetDocument(), sheet->AssociatedDocument());
     collection.AppendActiveStyleSheet(
-        std::make_pair(css_sheet, master_engine.RuleSetForSheet(*css_sheet)));
+        std::make_pair(sheet, master_engine.RuleSetForSheet(*sheet)));
   }
 }