Add temporary debug logging for crbug.com/639350.

chrome/test/base/interactive_test_utils_views.cc

Index: chrome/test/base/interactive_test_utils_views.cc
diff --git a/chrome/test/base/interactive_test_utils_views.cc b/chrome/test/base/interactive_test_utils_views.cc
index f1dce9d43b99783713733b025068094f8ecd83c7..10923ff3b25422dab1ada785a2a978affaafcfee 100644
--- a/chrome/test/base/interactive_test_utils_views.cc
+++ b/chrome/test/base/interactive_test_utils_views.cc
@@ -25,13 +25,23 @@ bool IsViewFocused(const Browser* browser, ViewID vid) {
 }
 
 void ClickOnView(const Browser* browser, ViewID vid) {
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 ClickOnView A";
   views::View* view =
       BrowserView::GetBrowserViewForBrowser(browser)->GetViewByID(vid);
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 ClickOnView B";
   DCHECK(view);
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 ClickOnView C";
   MoveMouseToCenterAndPress(view, ui_controls::LEFT,
                             ui_controls::DOWN | ui_controls::UP,
                             base::MessageLoop::QuitWhenIdleClosure());
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 ClickOnView D";
   content::RunMessageLoop();
+  if (g_crbug_639350_logging)
+    LOG(ERROR) << "crbug.com/639350 ClickOnView E";
 }
 
 void FocusView(const Browser* browser, ViewID vid) {