Do all OOLing in the views code. linux_views now builds clean with the clang plugin.

views/widget/widget_gtk.cc

Index: views/widget/widget_gtk.cc
diff --git a/views/widget/widget_gtk.cc b/views/widget/widget_gtk.cc
index 0ae89cb2d91b60eb6c337f8bfc20aa3a0cd6f310..b2737bd17235c36357f28e3a03ced51802a5a921 100644
--- a/views/widget/widget_gtk.cc
+++ b/views/widget/widget_gtk.cc
@@ -1260,6 +1260,10 @@ void WidgetGtk::OnShow(GtkWidget* widget) {
 void WidgetGtk::OnHide(GtkWidget* widget) {
 }
 
+bool WidgetGtk::ReleaseCaptureOnMouseReleased() {
+  return true;
+}
+
 void WidgetGtk::DoGrab() {
   has_capture_ = true;
   gtk_grab_add(window_contents_);