Don't return false for RenderStyle::operator== while fonts load.

Source/core/rendering/style/RenderStyle.cpp

Index: Source/core/rendering/style/RenderStyle.cpp
diff --git a/Source/core/rendering/style/RenderStyle.cpp b/Source/core/rendering/style/RenderStyle.cpp
index 44183b6f552cd27d76e54375145e2bd8bc029880..65b10e09d54225059906ef22a701547385cfc4b7 100644
--- a/Source/core/rendering/style/RenderStyle.cpp
+++ b/Source/core/rendering/style/RenderStyle.cpp
@@ -508,6 +508,9 @@ bool RenderStyle::diffNeedsFullLayoutAndPaintInvalidation(const RenderStyle& oth
     if (inherited->textAutosizingMultiplier != other.inherited->textAutosizingMultiplier)
         return true;
 
+    if (inherited->font.loadingCustomFonts() && !other.inherited->font.loadingCustomFonts())
+        return true;

[rune, 2014/12/04 12:54:17]

This catches the case going from loading to not loading. It would be safer to do
!= instead.

[rune, 2014/12/05 00:21:39]

Done.

+
     if (inherited.get() != other.inherited.get()) {
         if (inherited->line_height != other.inherited->line_height
             || inherited->font != other.inherited->font