Desktop aura: Continue threading context through views.

ui/views/widget/native_widget_aura.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ui/views/widget/native_widget_aura.h"
 
 #include "base/bind.h"
 #include "base/string_util.h"
 #include "third_party/skia/include/core/SkRegion.h"
 #include "ui/aura/client/activation_client.h"
@@ skipping 113 matching lines @@
       // will be added to the same display as the parent.
       gfx::Rect bounds = gfx::Screen::GetScreenFor(parent)->
           GetDisplayNearestWindow(parent).bounds();
       window_bounds.set_origin(bounds.origin());
     }
   }
 
   if (parent) {
     parent->AddChild(window_);
   } else {
+    // TODO(erg): Once I've threaded context through chrome, uncomment this
+    // check, which currently fails on the NULL == NULL case.
+    //
+    // DCHECK_NE(params.GetParent(), params.context);
+
     // TODO(erg): Remove this NULL check once we've made everything in views
     // actually pass us a context.
     aura::RootWindow* root_window =
         params.context ? params.context->GetRootWindow() : NULL;
     window_->SetDefaultParentByRootWindow(root_window, window_bounds);
   }
 
   // Wait to set the bounds until we have a parent. That way we can know our
   // true state/bounds (the LayoutManager may enforce a particular
   // state/bounds).
@@ skipping 915 matching lines @@
   return aura::Env::GetInstance()->is_mouse_button_down();
 }
 
 // static
 bool NativeWidgetPrivate::IsTouchDown() {
   return aura::Env::GetInstance()->is_touch_down();
 }
 
 }  // namespace internal
 }  // namespace views