Send memory management policies to the tile manager

cc/tile_manager.h

Index: cc/tile_manager.h
diff --git a/cc/tile_manager.h b/cc/tile_manager.h
index 857f88908c83617912d553626fc9f4d521fbc35c..ec17ee25f25b62e01f7d168486cea44c081d3abb 100644
--- a/cc/tile_manager.h
+++ b/cc/tile_manager.h
@@ -62,6 +62,9 @@ class CC_EXPORT ManagedTileState {
   TileManagerBin bin[NUM_TREES];
   // Bin used to determine raster priority.
   TileManagerBin raster_bin;
+  // The bin that the tile would have if the GPU memory manager had a maximally permissive policy,
+  // send to the GPU memory manager to determine policy.
+  TileManagerBin gpu_memmgr_stats_bin;
   TileResolution resolution;
   float time_to_needed_in_seconds;
 };
@@ -88,6 +91,11 @@ class CC_EXPORT TileManager {
   int GetTilesInBinCount(TileManagerBin bin, WhichTree tree);
   int GetDrawableTilesInBinCount(TileManagerBin bin, WhichTree tree);
 
+  void GetManagedMemoryStats(
+     size_t* memoryVisibleBytes,
+     size_t* memoryVisibleAndNearbyBytes,
+     size_t* memoryUseBytes);
+
  protected:
   // Methods called by Tile
   friend class Tile;