cc: Start using raster/eviction iterators.

cc/resources/memory_history.h

Index: cc/resources/memory_history.h
diff --git a/cc/resources/memory_history.h b/cc/resources/memory_history.h
index daca10f35a0a7a665e1de8ac41be05f88bfd5922..570a3d0ca4321f8ec13f2fe27d8ea063b153806f 100644
--- a/cc/resources/memory_history.h
+++ b/cc/resources/memory_history.h
@@ -22,17 +22,12 @@ class MemoryHistory {
   struct Entry {
     Entry()
         : total_budget_in_bytes(0),
-          bytes_allocated(0),
-          bytes_unreleasable(0),
-          bytes_over(0) {}
+          total_bytes_used(0),
+          had_enough_memory(false) {}
 
     size_t total_budget_in_bytes;
-    size_t bytes_allocated;
-    size_t bytes_unreleasable;
-    size_t bytes_over;
-    size_t bytes_total() const {
-      return bytes_allocated + bytes_unreleasable + bytes_over;
-    }
+    size_t total_bytes_used;
+    bool had_enough_memory;
   };
 
   void SaveEntry(const Entry& entry);