MacViews: Implement Force Touch/Mac dictionary lookup for Textfields.

ui/views/controls/textfield/textfield.cc

Index: ui/views/controls/textfield/textfield.cc
diff --git a/ui/views/controls/textfield/textfield.cc b/ui/views/controls/textfield/textfield.cc
index 4642d23fc89a89633cc84ff72fbb5011959a7b9d..55d4033999590832d10a6e6a226bdfa6640dc540 100644
--- a/ui/views/controls/textfield/textfield.cc
+++ b/ui/views/controls/textfield/textfield.cc
@@ -557,6 +557,10 @@ const char* Textfield::GetClassName() const {
   return kViewClassName;
 }
 
+gfx::RenderText* Textfield::GetRenderText() const {
+  return model_->render_text();
+}
+
 gfx::NativeCursor Textfield::GetCursor(const ui::MouseEvent& event) {
   bool in_selection = GetRenderText()->IsPointInSelection(event.location());
   bool drag_event = event.type() == ui::ET_MOUSE_DRAGGED;
@@ -1558,10 +1562,6 @@ void Textfield::DoInsertChar(base::char16 ch) {
   OnAfterUserAction();
 }
 
-gfx::RenderText* Textfield::GetRenderText() const {
-  return model_->render_text();
-}
-
 base::string16 Textfield::GetSelectionClipboardText() const {
   base::string16 selection_clipboard_text;
   ui::Clipboard::GetForCurrentThread()->ReadText(