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..dd12c99a344167a70b4bd772f9a775bf0b451841 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;
 };
@@ -82,6 +85,9 @@ class CC_EXPORT TileManager {
 
   void ManageTiles();
   void CheckForCompletedSetPixels();
+  void GetMemoryStats(size_t* memoryRequiredBytes,
+                      size_t* memoryNiceToHaveBytes,
+                      size_t* memoryUsedBytes);
 
   void GetRenderingStats(RenderingStats* stats);