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 57512ea51f33318b7f07149afe12fd579b00d387..1055d87630cfe2abcbf372b0d318ff6e8ea2a637 100644
--- a/third_party/WebKit/Source/core/editing/InputMethodController.cpp
+++ b/third_party/WebKit/Source/core/editing/InputMethodController.cpp
@@ -261,10 +261,6 @@
   const int offset = forward_machine.GetBoundaryOffset();
   DCHECK_EQ(offset, deletion_end - selection_end);
   return offset;
-}
-
-Element* RootEditableElementOfSelection(const FrameSelection& selection) {
-  return RootEditableElementOf(selection.GetSelectionInDOMTree().Base());
 }
 
 }  // anonymous namespace
@@ -1023,7 +1019,10 @@
     // plugins/mouse-capture-inside-shadow.html reaches here.
     return info;
   }
-  Element* element = RootEditableElementOfSelection(GetFrame().Selection());
+  Element* element = GetFrame()
+                         .Selection()
+                         .ComputeVisibleSelectionInDOMTreeDeprecated()
+                         .RootEditableElement();
   if (!element)
     return info;
 
@@ -1173,7 +1172,10 @@
   // It's important to preserve the equivalence of textInputInfo().type and
   // textInputType(), so perform the same rootEditableElement() existence check
   // here for consistency.
-  if (!RootEditableElementOfSelection(GetFrame().Selection()))
+  if (!GetFrame()
+           .Selection()
+           .ComputeVisibleSelectionInDOMTreeDeprecated()
+           .RootEditableElement())
     return kWebTextInputTypeNone;
 
   if (!IsAvailable())