Remove implementation of Panels on OSes other than ChromeOS.

chrome/browser/ui/panels/test_panel_collection_squeeze_observer.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 "chrome/browser/ui/panels/test_panel_collection_squeeze_observer.h"
-
-#include "chrome/browser/chrome_notification_types.h"
-#include "chrome/browser/ui/panels/docked_panel_collection.h"
-#include "chrome/browser/ui/panels/panel.h"
-#include "content/public/browser/notification_source.h"
-
-PanelCollectionSqueezeObserver::PanelCollectionSqueezeObserver(
-    DockedPanelCollection* collection, Panel* active_panel)
-    : TestPanelNotificationObserver(
-        chrome::NOTIFICATION_PANEL_COLLECTION_UPDATED,
-        content::Source<PanelCollection>(collection)),
-      panel_collection_(collection),
-      active_panel_(active_panel) {
-}
-
-PanelCollectionSqueezeObserver::~PanelCollectionSqueezeObserver() {}
-
-bool PanelCollectionSqueezeObserver::IsSqueezed(Panel* panel) {
-  return panel->GetBounds().width() < panel->GetRestoredBounds().width();
-}
-
-bool PanelCollectionSqueezeObserver::AtExpectedState() {
-  const DockedPanelCollection::Panels& panels = panel_collection_->panels();
-  for (DockedPanelCollection::Panels::const_iterator iter = panels.begin();
-       iter != panels.end(); ++iter) {
-    if (*iter == active_panel_) {
-      if (IsSqueezed(*iter))
-        return false;
-    } else if (!IsSqueezed(*iter)) {
-      return false;
-    }
-  }
-  return true;
-}