Separate VisualViewport layer tree creation from attachment.

third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2

Index: third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2
diff --git a/third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2 b/third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2
index 54cbe6bc59d266c521cbf1f1df456144b92ad868..0d54f849686ea0a2d8997b7f600653ca2f3eaa75 100644
--- a/third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2
+++ b/third_party/WebKit/LayoutTests/FlagExpectations/enable-slimming-paint-v2
@@ -449,7 +449,7 @@ Bug(none) compositing/video/video-poster.html [ Crash Failure ]
 Bug(none) compositing/video/video-reflection.html [ Crash Failure  ]
 Bug(none) compositing/visibility/layer-visible-content.html [ Failure ]
 Bug(none) compositing/visibility/overlays-persist-on-navigation.html [ Crash ]
-Bug(none) compositing/visibility/overlays.html [ Crash ]
+Bug(none) compositing/visibility/overlays.html [ Failure Crash ]
 Bug(none) compositing/visibility/visibility-image-layers-dynamic.html [ Crash Failure ]
 Bug(none) compositing/visibility/visibility-image-layers.html [ Failure ]
 Bug(none) compositing/visibility/visibility-simple-video-layer.html [ Failure ]
@@ -595,7 +595,7 @@ Bug(none) fast/events/scale-and-scroll-window.html [ Crash Timeout ]
 Bug(none) fast/events/scroll-after-click-on-tab-index.html [ Failure ]
 Bug(none) fast/events/space-scroll-textinput-canceled.html [ Failure ]
 Bug(none) fast/events/touch/compositor-touch-hit-rects-animation.html [ Failure ]
-Bug(none) fast/events/touch/compositor-touch-hit-rects-global.html [ Crash ]
+Bug(none) fast/events/touch/compositor-touch-hit-rects-global.html [ Failure Crash ]
 Bug(none) fast/events/touch/compositor-touch-hit-rects-many.html [ Failure ]
 Bug(none) fast/events/touch/compositor-touch-hit-rects-non-composited-scroll.html [ Failure ]
 Bug(none) fast/events/touch/compositor-touch-hit-rects-scroll.html [ Failure ]
@@ -1588,7 +1588,7 @@ crbug.com/675805 fast/text/complex-text-opacity.html [ Failure ]
 
 # Failures due to frame scrollbars not painted
 crbug.com/589279 css3/blending/background-blend-mode-data-uri-svg-image.html [ Failure ]
- 
+
 # Need to write SPv2 version of this code.
 crbug.com/157218 compositing/overflow/border-radius-styles-with-composited-child.html [ Failure ]
 crbug.com/157218 compositing/overflow/siblings-with-border-radius-ancestor.html [ Failure ]
@@ -1645,7 +1645,7 @@ Bug(none) virtual/threaded/inspector/ [ Skip ]
 Bug(none) virtual/threaded/fast/scroll-behavior/ [ Skip ]
 Bug(none) virtual/threaded/compositing/visibility/layer-visible-content.html [ Failure ]
 Bug(none) virtual/threaded/compositing/visibility/overlays-persist-on-navigation.html [ Crash ]
-Bug(none) virtual/threaded/compositing/visibility/overlays.html [ Crash ]
+Bug(none) virtual/threaded/compositing/visibility/overlays.html [ Failure Crash ]
 Bug(none) virtual/threaded/compositing/visibility/visibility-image-layers-dynamic.html [ Crash Failure ]
 Bug(none) virtual/threaded/compositing/visibility/visibility-image-layers.html [ Failure ]
 Bug(none) virtual/threaded/compositing/visibility/visibility-simple-video-layer.html [ Failure ]