Set caret width based on device scale factor

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

Index: third_party/WebKit/Source/core/layout/LayoutObject.h
diff --git a/third_party/WebKit/Source/core/layout/LayoutObject.h b/third_party/WebKit/Source/core/layout/LayoutObject.h
index 67d3cacb81f77ff7e8250953bc5e9f39ef709a8f..0fd3b6c0ea2b0c6429d1d600b44c2e96e70d9cfa 100644
--- a/third_party/WebKit/Source/core/layout/LayoutObject.h
+++ b/third_party/WebKit/Source/core/layout/LayoutObject.h
@@ -58,6 +58,7 @@ class Cursor;
 class HitTestLocation;
 class HitTestRequest;
 class HitTestResult;
+class HostWindow;
 class InlineBox;
 class LayoutBoxModelObject;
 class LayoutBlock;
@@ -84,7 +85,7 @@ enum MarkingBehavior {
 
 enum ScheduleRelayoutBehavior { ScheduleRelayout, DontScheduleRelayout };
 
-const LayoutUnit& caretWidth();
+const LayoutUnit& caretWidth(HostWindow* host);
 
 struct AnnotatedRegionValue {
   DISALLOW_NEW_EXCEPT_PLACEMENT_NEW();