Smart layer invalidation for LCD text.

cc/resources/picture_pile_impl.cc

Index: cc/resources/picture_pile_impl.cc
diff --git a/cc/resources/picture_pile_impl.cc b/cc/resources/picture_pile_impl.cc
index 6e71cada456e3046a2d7645fc6454e8dca3b1282..397d64c0d97490d062f918a5bdddcce8e4c49158 100644
--- a/cc/resources/picture_pile_impl.cc
+++ b/cc/resources/picture_pile_impl.cc
@@ -262,12 +262,14 @@ void PicturePileImpl::AnalyzeInRect(const gfx::Rect& content_rect,
   analysis->is_transparent = canvas.isTransparent();
   analysis->is_solid_color = canvas.getColorIfSolid(&analysis->solid_color);
   analysis->is_cheap_to_raster = canvas.isCheap();
+  analysis->has_text = canvas.hasText();
   canvas.consumeLazyPixelRefs(&analysis->lazy_pixel_refs);
 }
 
 PicturePileImpl::Analysis::Analysis()
   : is_solid_color(false),
     is_transparent(false),
+    has_text(false),
     is_cheap_to_raster(false) {
 }