cc: Fix size_t to int truncations in tiles/ and trees/

cc/resources/memory_history.cc

Index: cc/resources/memory_history.cc
diff --git a/cc/resources/memory_history.cc b/cc/resources/memory_history.cc
index 4dc49c881a693ea1f6ea54166f2884034bedfa8d..29bad2a30b32946656aad5e86b971074525fee76 100644
--- a/cc/resources/memory_history.cc
+++ b/cc/resources/memory_history.cc
@@ -19,21 +19,4 @@ void MemoryHistory::SaveEntry(const MemoryHistory::Entry& entry) {
   ring_buffer_.SaveToBuffer(entry);
 }
 
-void MemoryHistory::GetMinAndMax(size_t* min, size_t* max) const {
-  *min = std::numeric_limits<size_t>::max();
-  *max = 0;
-
-  for (RingBufferType::Iterator it = ring_buffer_.Begin(); it; ++it) {
-    size_t bytes_total = it->total_bytes_used;
-
-    if (bytes_total < *min)
-      *min = bytes_total;
-    if (bytes_total > *max)
-      *max = bytes_total;
-  }
-
-  if (*min > *max)
-    *min = *max;
-}
-
 }  // namespace cc