Fix font-size shaking issue in some pages

third_party/WebKit/Source/core/layout/TextAutosizer.h

Index: third_party/WebKit/Source/core/layout/TextAutosizer.h
diff --git a/third_party/WebKit/Source/core/layout/TextAutosizer.h b/third_party/WebKit/Source/core/layout/TextAutosizer.h
index bfacc62ecfeb874b2360f41b0385c41a2411d889..e1b12e2f77162d826c1b9ead4b0396392cc9a46d 100644
--- a/third_party/WebKit/Source/core/layout/TextAutosizer.h
+++ b/third_party/WebKit/Source/core/layout/TextAutosizer.h
@@ -309,8 +309,9 @@ class CORE_EXPORT TextAutosizer final
   float ClusterMultiplier(Cluster*);
   float SuperclusterMultiplier(Cluster*);
   // A cluster's width provider is typically the deepest block containing all
-  // text. There are exceptions, such as tables and table cells which use the
-  // table itself for width.
+  // text. There are exceptions:
+  // 1. Tables and table cells which use the table itself for width.
+  // 2. LayoutView which use itself for keeping its clusterMultiplier steady.
   const LayoutBlock* ClusterWidthProvider(const LayoutBlock*) const;
   const LayoutBlock* MaxClusterWidthProvider(
       Supercluster*,