Remove unused code in AppActivityProxy

athena/content/app_activity_proxy.cc

Index: athena/content/app_activity_proxy.cc
diff --git a/athena/content/app_activity_proxy.cc b/athena/content/app_activity_proxy.cc
index 143dd88af2c001f30f262606970a767512d2f47c..82602205e612b982cc188ce47f5d27e085053689 100644
--- a/athena/content/app_activity_proxy.cc
+++ b/athena/content/app_activity_proxy.cc
@@ -11,7 +11,6 @@
 #include "ui/aura/window.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
-#include "ui/wm/core/window_util.h"
 
 namespace athena {
 
@@ -69,10 +68,6 @@ void AppActivityProxy::Init() {
       WindowManager::Get()->GetWindowListProvider();
   window_list_provider->StackWindowBehindTo(GetWindow(),
                                             replaced_activity_->GetWindow());
-  // Creating this object was moving the activation to this window which should
-  // not be the active window. As such we re-activate the top activity window.
-  // TODO(skuhne): This should possibly move to the WindowListProvider.
-  wm::ActivateWindow(window_list_provider->GetWindowList().back());

[Mr4D (OOO till 08-26), 2014/10/03 23:26:18]

Are you sure this works now as intended? I have a browser test queued to test
this condition. Please wait...

[Mr4D (OOO till 08-26), 2014/10/08 14:06:28]

The way it is set up at the moment you cannot remove it without breaking certain
situations. However - after my browser test and other fixes have landed this can
be removed.

Problem: When the system is bogged down (over 90% resources used), you go into
overview mode and you select a previous application activity, it will not show,
but the app behind will (which is caused by the fact that the proxy's
destruction will cause an activation change).

   // After the Init() function returns, the passed |replaced_activity_| might
   // get destroyed. Since we do not need it anymore we reset it.
   replaced_activity_ = NULL;