Don't track whether a resize ack is pending during layout tests

content/test/layouttest_support.cc

Index: content/test/layouttest_support.cc
diff --git a/content/test/layouttest_support.cc b/content/test/layouttest_support.cc
index 100ce3d3a87356a2a512cd834fbc66c7d5ef0551..1f5d19f43416ae5d4a4236f8a7dc8d70b9766cc1 100644
--- a/content/test/layouttest_support.cc
+++ b/content/test/layouttest_support.cc
@@ -6,6 +6,7 @@
 
 #include "base/callback.h"
 #include "base/lazy_instance.h"
+#include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/common/gpu/image_transport_surface.h"
 #include "content/renderer/render_thread_impl.h"
 #include "content/renderer/render_view_impl.h"
@@ -69,6 +70,7 @@ void EnableBrowserLayoutTestMode() {
 #elif defined(OS_WIN) && !defined(USE_AURA)
   WebContentsDragWin::DisableDragDropForTesting();
 #endif
+  RenderWidgetHostImpl::DisableResizeAckCheckForTesting();
 }
 
 int GetLocalSessionHistoryLength(RenderView* render_view) {