Add temporary debug logging for crbug.com/639350.

chrome/test/base/interactive_test_utils_common_views.cc

 // Copyright 2016 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.
 
 // Methods compiled on all toolkit-views platforms (including Mac).
 
 #include "chrome/test/base/interactive_test_utils.h"
 
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_animator.h"
 #include "ui/views/view.h"
 #include "ui/views/widget/widget.h"
 
 namespace ui_test_utils {
 
 void MoveMouseToCenterAndPress(views::View* view,
                                ui_controls::MouseButton button,
                                int state,
                                const base::Closure& closure) {
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 MoveMouseToCenterAndPress A";
   DCHECK(view);
   DCHECK(view->GetWidget());
   // Complete any in-progress animation before sending the events so that the
   // mouse-event targetting happens reliably, and does not flake because of
   // unreliable animation state.
   ui::Layer* layer = view->GetWidget()->GetLayer();
   if (layer) {
+    if (g_crbug_639350_logging)
+      LOG(ERROR) << "crbug.com/639350 MoveMouseToCenterAndPress B";
     ui::LayerAnimator* animator = layer->GetAnimator();
     if (animator && animator->is_animating())
       animator->StopAnimating();
+    if (g_crbug_639350_logging)
+      LOG(ERROR) << "crbug.com/639350 MoveMouseToCenterAndPress C";
   }
 
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 MoveMouseToCenterAndPress D";
   gfx::Point view_center(view->width() / 2, view->height() / 2);
   views::View::ConvertPointToScreen(view, &view_center);
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 MoveMouseToCenterAndPress E";
   ui_controls::SendMouseMoveNotifyWhenDone(
       view_center.x(),
       view_center.y(),
       base::Bind(&internal::ClickTask, button, state, closure));
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 MoveMouseToCenterAndPress F";
 }
 
 }  // namespace ui_test_utils