Remove unused multiline attribute in textfield

views/controls/textfield/native_textfield_win.cc

Index: views/controls/textfield/native_textfield_win.cc
diff --git a/views/controls/textfield/native_textfield_win.cc b/views/controls/textfield/native_textfield_win.cc
index b59e168f61a12313235b5b2ebe449e5ca42f7d95..d2ae776fab2a7c4b458ad631dcefaf3ccdb2785e 100644
--- a/views/controls/textfield/native_textfield_win.cc
+++ b/views/controls/textfield/native_textfield_win.cc
@@ -616,13 +616,11 @@ void NativeTextfieldWin::OnKeyDown(TCHAR key, UINT repeat_count, UINT flags) {
   // in this function even with a WM_SYSKEYDOWN handler.
 
   switch (key) {
+
+    // Ignore Return
     case VK_RETURN:
-      // If we are multi-line, we want to let returns through so they start a
-      // new line.
-      if (textfield_->IsMultiLine())
-        break;
-      else
-        return;
+      return;
+
     // Hijacking Editing Commands
     //
     // We hijack the keyboard short-cuts for Cut, Copy, and Paste here so that