Android: Don't evict thumbnails for last visible tab on stop

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index 27a184c95d2321aa45e554f42d5d59d8a995e83d..68e8e2fe6230816dcc06c162d431b78c60032e5b 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -819,7 +819,7 @@ void RenderWidgetHostViewAndroid::CopyFromCompositingSurface(
     const ReadbackRequestCallback& callback,
     const SkColorType preferred_color_type) {
   TRACE_EVENT0("cc", "RenderWidgetHostViewAndroid::CopyFromCompositingSurface");
-  if (!host_ || host_->is_hidden() || !IsSurfaceAvailableForCopy()) {
+  if (!host_ || !IsSurfaceAvailableForCopy()) {
     callback.Run(SkBitmap(), READBACK_SURFACE_UNAVAILABLE);
     return;
   }