Get rid of redundant equality checks from EqualSelectionsAlgorithm() for VisibleSelectionTemplate

This patch gets rid of redundant equality checks of |Start()| and |End()| of
|VisibleSelectionTemplate| from |EqualSelectionsAlgorithm()| for improving
code health.

Change-Id: I0fd5949f8356b0527fa5e67426818434efedbee1
Reviewed-on: https://chromium-review.googlesource.com/597510Reviewed-by: Xiaocheng Hu <xiaochengh@chromium.org>
Commit-Queue: Yoshifumi Inoue <yosin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#491642}

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

@@ -813,9 +813,7 @@ static bool EqualSelectionsAlgorithm(
   const VisibleSelectionTemplate<Strategy> selection_wrapper1(selection1);
   const VisibleSelectionTemplate<Strategy> selection_wrapper2(selection2);
 
-  return selection_wrapper1.Start() == selection_wrapper2.Start() &&
-         selection_wrapper1.End() == selection_wrapper2.End() &&
-         selection_wrapper1.Base() == selection_wrapper2.Base() &&
+  return selection_wrapper1.Base() == selection_wrapper2.Base() &&
          selection_wrapper1.Extent() == selection_wrapper2.Extent();
 }