Use SetSelection in InputMethodController::SetSelectionOffsets

InputMethodController::SetSelectionOffsets function is
changed to use SetSelection instead of SetSelectedRange.

BUG=721190

Review-Url: https://codereview.chromium.org/2893303002
Cr-Commit-Position: refs/heads/master@{#473793}

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

@@ -803,9 +803,9 @@ bool InputMethodController::SetSelectionOffsets(
   if (range.IsNull())
     return false;
 
-  return GetFrame().Selection().SetSelectedRange(
-      range, VP_DEFAULT_AFFINITY, SelectionDirectionalMode::kNonDirectional,
-      options);
+  GetFrame().Selection().SetSelection(
+      SelectionInDOMTree::Builder().SetBaseAndExtent(range).Build(), options);
+  return true;
 }
 
 bool InputMethodController::SetEditableSelectionOffsets(