Revert of Get rid of computeVisibleSelectionInDOMTreeDeprecated() in InputMethodController

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

Index: third_party/WebKit/Source/core/editing/InputMethodController.cpp
diff --git a/third_party/WebKit/Source/core/editing/InputMethodController.cpp b/third_party/WebKit/Source/core/editing/InputMethodController.cpp
index fd4724b8fff6eb83aaf51c9c840eda12565c157b..5b46a96cc3e4b46234b9885ed4e2c95a28259f69 100644
--- a/third_party/WebKit/Source/core/editing/InputMethodController.cpp
+++ b/third_party/WebKit/Source/core/editing/InputMethodController.cpp
@@ -259,10 +259,6 @@
   const int offset = forwardMachine.getBoundaryOffset();
   DCHECK_EQ(offset, deletionEnd - selectionEnd);
   return offset;
-}
-
-Element* rootEditableElementOfSelection(const FrameSelection& selection) {
-  return rootEditableElementOf(selection.selectionInDOMTree().base());
 }
 
 }  // anonymous namespace
@@ -1034,7 +1030,10 @@
     // plugins/mouse-capture-inside-shadow.html reaches here.
     return info;
   }
-  Element* element = rootEditableElementOfSelection(frame().selection());
+  Element* element = frame()
+                         .selection()
+                         .computeVisibleSelectionInDOMTreeDeprecated()
+                         .rootEditableElement();
   if (!element)
     return info;
 
@@ -1183,7 +1182,10 @@
   // It's important to preserve the equivalence of textInputInfo().type and
   // textInputType(), so perform the same rootEditableElement() existence check
   // here for consistency.
-  if (!rootEditableElementOfSelection(frame().selection()))
+  if (!frame()
+           .selection()
+           .computeVisibleSelectionInDOMTreeDeprecated()
+           .rootEditableElement())
     return WebTextInputTypeNone;
 
   if (!isAvailable())