Rework tree APIs to reflect Google style and more const-correctness....

chrome/browser/chromeos/login/eula_view.cc

 // Copyright (c) 2011 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/chromeos/login/eula_view.h"
 
 #include <signal.h>
 #include <sys/types.h>
 #include <string>
 
@@ skipping 57 matching lines @@
   SINGLE_CONTROL_WITH_SHIFT_ROW,
   SINGLE_LINK_WITH_SHIFT_ROW,
   LAST_ROW
 };
 
 // A simple LayoutManager that causes the associated view's one child to be
 // sized to match the bounds of its parent except the bounds, if set.
 struct FillLayoutWithBorder : public views::LayoutManager {
   // Overridden from LayoutManager:
   virtual void Layout(views::View* host) {
-    DCHECK(host->GetChildViewCount());
+    DCHECK(host->has_children());
     host->GetChildViewAt(0)->SetBoundsRect(host->GetContentsBounds());
   }
   virtual gfx::Size GetPreferredSize(views::View* host) {
     return gfx::Size(host->width(), host->height());
   }
 };
 
 // System security setting dialog.
 class TpmInfoView : public views::View,
                     public views::DialogDelegate {
@@ skipping 445 matching lines @@
 bool EulaView::OnKeyPressed(const views::KeyEvent&) {
   // Close message bubble if shown. bubble_ will be set to NULL in callback.
   if (bubble_) {
     bubble_->Close();
     return true;
   }
   return false;
 }
 
 }  // namespace chromeos