Cleanup: remove GTK stuff

ui/views/widget/widget.cc

Index: ui/views/widget/widget.cc
diff --git a/ui/views/widget/widget.cc b/ui/views/widget/widget.cc
index 8c3799d0974f53da19e4c13d09c51ce55241b031..50ec745abd52456ce1eadc72f322688892d6498c 100644
--- a/ui/views/widget/widget.cc
+++ b/ui/views/widget/widget.cc
@@ -35,9 +35,6 @@ namespace {
 // Set to true if a pure Views implementation is preferred
 bool use_pure_views = false;
 
-// True to enable debug paint that indicates where to be painted.
-bool debug_paint = false;
-
 }  // namespace
 
 namespace views {
@@ -300,16 +297,6 @@ gfx::Size Widget::GetLocalizedContentsSize(int col_resource_id,
 }
 
 // static
-void Widget::SetDebugPaintEnabled(bool enabled) {
-  debug_paint = enabled;
-}
-
-// static
-bool Widget::IsDebugPaintEnabled() {
-  return debug_paint;
-}
-
-// static
 bool Widget::RequiresNonClientView(InitParams::Type type) {
   return type == InitParams::TYPE_WINDOW ||
          type == InitParams::TYPE_PANEL ||
@@ -1280,12 +1267,8 @@ bool Widget::GetSavedWindowPlacement(gfx::Rect* bounds,
 
 void Widget::ReplaceInputMethod(InputMethod* input_method) {
   input_method_.reset(input_method);
-  // TODO(oshima): Gtk's textfield doesn't need views InputMethod.
-  // Remove this check once gtk is removed.
-  if (input_method) {
-    input_method->set_delegate(native_widget_);
-    input_method->Init(this);
-  }
+  input_method->set_delegate(native_widget_);
+  input_method->Init(this);
 }
 
 namespace internal {