Move the concept of Activation to the Shell.

ui/aura/window.cc

Index: ui/aura/window.cc
===================================================================
--- ui/aura/window.cc	(revision 114022)
+++ ui/aura/window.cc	(working copy)
@@ -103,10 +103,6 @@
 void Window::Hide() {
   SetVisible(false);
   ReleaseCapture();
-  if (RootWindow::GetInstance()->active_window() == this ||
-      !RootWindow::GetInstance()->active_window()) {
-    RootWindow::GetInstance()->ActivateTopmostWindow();
-  }
 }
 
 bool Window::IsVisible() const {
@@ -121,19 +117,6 @@
   return gfx::Rect(origin, bounds().size());
 }
 
-void Window::Activate() {
-  // If we support minimization need to ensure this restores the window first.
-  aura::RootWindow::GetInstance()->SetActiveWindow(this, this);
-}
-
-void Window::Deactivate() {
-  aura::RootWindow::GetInstance()->Deactivate(this);
-}
-
-bool Window::IsActive() const {
-  return aura::RootWindow::GetInstance()->active_window() == this;
-}
-
 void Window::SetTransform(const ui::Transform& transform) {
   layer()->SetTransform(transform);
 }
@@ -219,10 +202,6 @@
   child->OnStackingChanged();
 }
 
-bool Window::CanActivate() const {
-  return IsVisible() && (!delegate_ || delegate_->ShouldActivate(NULL));
-}
-
 void Window::AddChild(Window* child) {
   DCHECK(std::find(children_.begin(), children_.end(), child) ==
       children_.end());