Trigger repaint on first paint only on pending stylesheet decrement.

third_party/WebKit/Source/core/paint/BlockPainter.cpp

Index: third_party/WebKit/Source/core/paint/BlockPainter.cpp
diff --git a/third_party/WebKit/Source/core/paint/BlockPainter.cpp b/third_party/WebKit/Source/core/paint/BlockPainter.cpp
index 9e0b7daea39a6350c3b2a9faf479da063caf7633..624d9f10fcf15f28cf637c4772e71eafbf30a16b 100644
--- a/third_party/WebKit/Source/core/paint/BlockPainter.cpp
+++ b/third_party/WebKit/Source/core/paint/BlockPainter.cpp
@@ -241,8 +241,8 @@ bool BlockPainter::intersectsPaintRect(const PaintInfo& paintInfo, const LayoutP
 void BlockPainter::paintContents(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     // Avoid painting descendants of the root element when stylesheets haven't loaded. This eliminates FOUC.
-    // It's ok not to draw, because later on, when all the stylesheets do load, styleResolverChanged() on the Document
-    // will do a full paint invalidation.
+    // It's ok not to draw, because later on, when all the stylesheets do load, styleResolverMayHaveChanged()
+    // on Document will trigger a full paint invalidation.
     if (m_layoutBlock.document().didLayoutWithPendingStylesheets() && !m_layoutBlock.isLayoutView())
         return;