Do not adjust subpixel if the window's position is controlled by client.

ash/wm/window_state.cc

 // Copyright 2013 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 "ash/wm/window_state.h"
 
 #include <utility>
 
 #include "ash/public/cpp/window_properties.h"
 #include "ash/public/interfaces/window_pin_type.mojom.h"
@@ skipping 434 matching lines @@
     const display::Display display =
         display::Screen::GetScreen()->GetDisplayNearestWindow(window_);
     min_size.SetToMin(display.work_area().size());
 
     actual_new_bounds.set_width(
         std::max(min_size.width(), actual_new_bounds.width()));
     actual_new_bounds.set_height(
         std::max(min_size.height(), actual_new_bounds.height()));
   }
   BoundsSetter().SetBounds(window_, actual_new_bounds);
-  wm::SnapWindowToPixelBoundary(window_);
+  if (!allow_set_bounds_direct())
+    wm::SnapWindowToPixelBoundary(window_);
 }
 
 void WindowState::SetBoundsConstrained(const gfx::Rect& bounds) {
   gfx::Rect work_area_in_parent =
       ScreenUtil::GetDisplayWorkAreaBoundsInParent(window_);
   gfx::Rect child_bounds(bounds);
   AdjustBoundsSmallerThan(work_area_in_parent.size(), &child_bounds);
   SetBoundsDirect(child_bounds);
 }
 
@@ skipping 83 matching lines @@
     if (!ignore_property_change_) {
       WMEvent event(WMEventTypeFromWindowPinType(GetPinType()));
       OnWMEvent(&event);
     }
     return;
   }
 }
 
 }  // namespace wm
 }  // namespace ash