Make adjustedSelectionStartForStyleComputation() to take Position instead of VisibleSeleciton

third_party/WebKit/Source/core/editing/EditingUtilities.cpp

Index: third_party/WebKit/Source/core/editing/EditingUtilities.cpp
diff --git a/third_party/WebKit/Source/core/editing/EditingUtilities.cpp b/third_party/WebKit/Source/core/editing/EditingUtilities.cpp
index c4fd9c04fa9072c1e1cc67fcd884951b81944d23..beeba1971b64d70dbe3c02b984713d7830533117 100644
--- a/third_party/WebKit/Source/core/editing/EditingUtilities.cpp
+++ b/third_party/WebKit/Source/core/editing/EditingUtilities.cpp
@@ -2048,23 +2048,17 @@ bool isBlockFlowElement(const Node& node) {
          layoutObject->isLayoutBlockFlow();
 }
 
-Position adjustedSelectionStartForStyleComputation(
-    const VisibleSelection& selection) {
+Position adjustedSelectionStartForStyleComputation(const Position& position) {
   // This function is used by range style computations to avoid bugs like:
   // <rdar://problem/4017641> REGRESSION (Mail): you can only bold/unbold a
   // selection starting from end of line once
   // It is important to skip certain irrelevant content at the start of the
   // selection, so we do not wind up with a spurious "mixed" style.
 
-  VisiblePosition visiblePosition = createVisiblePosition(selection.start());
+  VisiblePosition visiblePosition = createVisiblePosition(position);
   if (visiblePosition.isNull())
     return Position();
 
-  // if the selection is a caret, just return the position, since the style
-  // behind us is relevant
-  if (selection.isCaret())
-    return visiblePosition.deepEquivalent();
-
   // if the selection starts just before a paragraph break, skip over it
   if (isEndOfParagraph(visiblePosition))
     return mostForwardCaretPosition(