It turns out I had the sense of the GetLocalBounds bool wrong everywhere, so ...

chrome/browser/chromeos/login/username_view.cc

 // Copyright (c) 2010 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/username_view.h"
 
 #include "base/logging.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/chromeos/login/rounded_view.h"
 #include "grit/generated_resources.h"
@@ skipping 63 matching lines @@
 }  // namespace
 
 UsernameView::UsernameView(const std::wstring& username, bool use_small_shape)
     : views::Label(username.empty()
           ? UTF16ToWide(l10n_util::GetStringUTF16(IDS_GUEST)) : username),
       use_small_shape_(use_small_shape),
       is_guest_(username.empty()) {
 }
 
 void UsernameView::Paint(gfx::Canvas* canvas) {
-  gfx::Rect bounds = GetLocalBounds();
+  gfx::Rect bounds = GetContentsBounds();
   if (text_image_ == NULL)
     PaintUsername(bounds);
   DCHECK(text_image_ != NULL);
   DCHECK(bounds.size() ==
          gfx::Size(text_image_->width(), text_image_->height()));
   canvas->DrawBitmapInt(*text_image_, bounds.x(), bounds.y());
 }
 
 // static
 UsernameView* UsernameView::CreateShapedUsernameView(
@@ skipping 92 matching lines @@
 
 void UsernameView::OnLocaleChanged() {
   if (is_guest_) {
     SetText(UTF16ToWide(l10n_util::GetStringUTF16(IDS_GUEST)));
     text_image_.reset();
     SchedulePaint();
   }
 }
 
 }  // namespace chromeos