cc: Start using raster/eviction iterators in tile manager

cc/layers/heads_up_display_layer_impl.cc

Index: cc/layers/heads_up_display_layer_impl.cc
diff --git a/cc/layers/heads_up_display_layer_impl.cc b/cc/layers/heads_up_display_layer_impl.cc
index 6149a06be0cf9b05b595e9f0a580af9e78ce5470..fac4325895f5bc1b4874bd1f0e8ef4928b021657 100644
--- a/cc/layers/heads_up_display_layer_impl.cc
+++ b/cc/layers/heads_up_display_layer_impl.cc
@@ -456,7 +456,7 @@ SkRect HeadsUpDisplayLayerImpl::DrawMemoryDisplay(SkCanvas* canvas,
                                                   int right,
                                                   int top,
                                                   int width) const {
-  if (!memory_entry_.bytes_total())
+  if (!memory_entry_.total_bytes_used)
     return SkRect::MakeEmpty();
 
   const int kPadding = 4;
@@ -485,20 +485,14 @@ SkRect HeadsUpDisplayLayerImpl::DrawMemoryDisplay(SkCanvas* canvas,
            kFontHeight,
            title_pos);
 
-  std::string text =
-      base::StringPrintf("%6.1f MB used",
-                         (memory_entry_.bytes_unreleasable +
-                          memory_entry_.bytes_allocated) / megabyte);
+  std::string text = base::StringPrintf(
+      "%6.1f MB used", memory_entry_.total_bytes_used / megabyte);
   DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat1_pos);
 
-  if (memory_entry_.bytes_over) {
+  if (!memory_entry_.had_enough_memory)
     paint.setColor(SK_ColorRED);
-    text = base::StringPrintf("%6.1f MB over",
-                              memory_entry_.bytes_over / megabyte);
-  } else {
-    text = base::StringPrintf("%6.1f MB max ",
-                              memory_entry_.total_budget_in_bytes / megabyte);
-  }
+  text = base::StringPrintf("%6.1f MB max ",
+                            memory_entry_.total_budget_in_bytes / megabyte);
   DrawText(canvas, &paint, text, SkPaint::kRight_Align, kFontHeight, stat2_pos);
 
   return area;