Make Position::FirstPositionInNode() to take const Node& instead of Node*

third_party/WebKit/Source/core/editing/commands/ApplyStyleCommand.cpp

Index: third_party/WebKit/Source/core/editing/commands/ApplyStyleCommand.cpp
diff --git a/third_party/WebKit/Source/core/editing/commands/ApplyStyleCommand.cpp b/third_party/WebKit/Source/core/editing/commands/ApplyStyleCommand.cpp
index 19b8a96322398318c1b139edea9114fdd30e6ad2..8682b1f48c8cb8b2768572ebabbf15fbd4940d53 100644
--- a/third_party/WebKit/Source/core/editing/commands/ApplyStyleCommand.cpp
+++ b/third_party/WebKit/Source/core/editing/commands/ApplyStyleCommand.cpp
@@ -263,10 +263,10 @@ void ApplyStyleCommand::ApplyBlockStyle(EditingStyle* style,
   Node& scope = NodeTraversal::HighestAncestorOrSelf(
       *visible_start.DeepEquivalent().AnchorNode());
   Range* start_range =
-      Range::Create(GetDocument(), Position::FirstPositionInNode(&scope),
+      Range::Create(GetDocument(), Position::FirstPositionInNode(scope),
                     visible_start.DeepEquivalent().ParentAnchoredEquivalent());
   Range* end_range =
-      Range::Create(GetDocument(), Position::FirstPositionInNode(&scope),
+      Range::Create(GetDocument(), Position::FirstPositionInNode(scope),
                     visible_end.DeepEquivalent().ParentAnchoredEquivalent());
 
   const TextIteratorBehavior behavior =
@@ -303,8 +303,8 @@ void ApplyStyleCommand::ApplyBlockStyle(EditingStyle* style,
           block = new_block;
           if (paragraph_start.IsOrphan()) {
             GetDocument().UpdateStyleAndLayoutIgnorePendingStylesheets();
-            paragraph_start =
-                CreateVisiblePosition(Position::FirstPositionInNode(new_block));
+            paragraph_start = CreateVisiblePosition(
+                Position::FirstPositionInNode(*new_block));
           }
         }
         DCHECK(!paragraph_start.IsOrphan()) << paragraph_start;
@@ -1552,7 +1552,7 @@ void ApplyStyleCommand::SplitTextAtStart(const Position& start,
 
   Text* text = ToText(start.ComputeContainerNode());
   SplitTextNode(text, start.OffsetInContainerNode());
-  UpdateStartEnd(Position::FirstPositionInNode(text), new_end);
+  UpdateStartEnd(Position::FirstPositionInNode(*text), new_end);
 }
 
 void ApplyStyleCommand::SplitTextAtEnd(const Position& start,