Do not save/restore window state for client which controls its own bounds.

components/exo/shell_surface.cc

 // Copyright 2015 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 "components/exo/shell_surface.h"
 
 #include <algorithm>
 
 #include "ash/common/frame/custom_frame_view_ash.h"
 #include "ash/common/shelf/wm_shelf.h"
@@ skipping 829 matching lines @@
 }
 
 bool ShellSurface::CanMinimize() const {
   return can_minimize_;
 }
 
 base::string16 ShellSurface::GetWindowTitle() const {
   return title_;
 }
 
+void ShellSurface::SaveWindowPlacement(const gfx::Rect& bounds,
+                                       ui::WindowShowState show_state) {
+  if (bounds_mode_ != BoundsMode::CLIENT)
+    WidgetDelegate::SaveWindowPlacement(bounds, show_state);
+}
+
+bool ShellSurface::GetSavedWindowPlacement(
+    const views::Widget* widget,
+    gfx::Rect* bounds,
+    ui::WindowShowState* show_state) const {
+  if (bounds_mode_ != BoundsMode::CLIENT)
+    return WidgetDelegate::GetSavedWindowPlacement(widget, bounds, show_state);
+  return false;
+}
+
 void ShellSurface::WindowClosing() {
   if (resizer_)
     EndDrag(true /* revert */);
   SetEnabled(false);
   widget_ = nullptr;
   shadow_overlay_ = nullptr;
   shadow_underlay_ = nullptr;
 }
 
 views::Widget* ShellSurface::GetWidget() {
@@ skipping 733 matching lines @@
     // small style shadow for them.
     if (!activatable_)
       shadow->SetElevation(wm::ShadowElevation::SMALL);
     // We don't have rounded corners unless frame is enabled.
     if (!frame_enabled_)
       shadow->SetRoundedCornerRadius(0);
   }
 }
 
 }  // namespace exo