Remove the PaintInvalidation DocumentLifeCycle states.

sky/engine/core/dom/DocumentLifecycle.cpp

Index: sky/engine/core/dom/DocumentLifecycle.cpp
diff --git a/sky/engine/core/dom/DocumentLifecycle.cpp b/sky/engine/core/dom/DocumentLifecycle.cpp
index 484d82ce2c08bdbe9519ac470acb1eb12f5b4508..5c07cd2af6fdff31739374a88000317672c5c4ea 100644
--- a/sky/engine/core/dom/DocumentLifecycle.cpp
+++ b/sky/engine/core/dom/DocumentLifecycle.cpp
@@ -127,17 +127,15 @@ bool DocumentLifecycle::canAdvanceTo(State state) const
             return true;
         return false;
     }
-    if (m_state == InPaintInvalidation) {
-        if (state == PaintInvalidationClean)
-            return true;
-        return false;
-    }
-    if (m_state == PaintInvalidationClean) {
+    if (m_state == StyleAndLayoutClean) {
         if (state == InStyleRecalc)
             return true;
         if (state == InPreLayout)
             return true;
-        if (state == InPaintInvalidation)
+        if (state == LayoutClean)
+            return true;
+        // We can pump frames without style or layout needing updating.
+        if (state == StyleAndLayoutClean)
             return true;
         return false;
     }
@@ -149,7 +147,7 @@ bool DocumentLifecycle::canRewindTo(State state) const
     // This transition is bogus, but we've whitelisted it anyway.
     if (s_deprecatedTransitionStack && m_state == s_deprecatedTransitionStack->from() && state == s_deprecatedTransitionStack->to())
         return true;
-    return m_state == StyleClean || m_state == AfterPerformLayout || m_state == LayoutClean || m_state == PaintInvalidationClean;
+    return m_state == StyleClean || m_state == AfterPerformLayout || m_state == LayoutClean || m_state == StyleAndLayoutClean;
 }
 
 #endif