Layout in the ShellWindow becomes chaos

ui/views/widget/native_widget_win.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 "ui/views/widget/native_widget_win.h"
 
 #include <dwmapi.h>
 #include <shellapi.h>
 
 #include <algorithm>
@@ skipping 2482 matching lines @@
     lock_updates_count_ = 0;
   }
 }
 
 bool NativeWidgetWin::WidgetSizeIsClientSize() const {
   const Widget* widget = GetWidget()->GetTopLevelWidget();
   return IsZoomed() || (widget && widget->ShouldUseNativeFrame());
 }
 
 void NativeWidgetWin::ClientAreaSizeChanged() {
-  RECT r;
-  if (WidgetSizeIsClientSize())
-    GetClientRect(&r);
-  else
+  RECT r = {0, 0, 0, 0};
+  if (WidgetSizeIsClientSize()) {
+    // TODO(beng): investigate whether this could be done
+    // from other branch of if-else.
+    if (!IsMinimized())
+      GetClientRect(&r);
+  } else
     GetWindowRect(&r);
   gfx::Size s(std::max(0, static_cast<int>(r.right - r.left)),
               std::max(0, static_cast<int>(r.bottom - r.top)));
   delegate_->OnNativeWidgetSizeChanged(s);
   if (use_layered_buffer_)
     layered_window_contents_.reset(
         new gfx::Canvas(s, ui::SCALE_FACTOR_100P, false));
 }
 
 void NativeWidgetWin::UpdateDWMFrame() {
@@ skipping 249 matching lines @@
 // static
 bool NativeWidgetPrivate::IsTouchDown() {
   // This currently isn't necessary because we're not generating touch events on
   // windows.  When we do, this will need to be updated.
   return false;
 }
 
 }  // namespace internal
 
 }  // namespace views