cc: Fix TilePriority::IsHigherPriorityThan to be correct.

cc/resources/picture_layer_tiling.cc

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/resources/picture_layer_tiling.h"
 
 #include <algorithm>
 #include <cmath>
 #include <limits>
 
@@ skipping 15 matching lines @@
   ~TileEvictionOrder() {}
 
   bool operator()(const Tile* a, const Tile* b) {
     const TilePriority& a_priority = a->priority(tree_);
     const TilePriority& b_priority = b->priority(tree_);
 
     if (a_priority.priority_bin == b_priority.priority_bin &&
         a->required_for_activation() != b->required_for_activation()) {
       return b->required_for_activation();
     }
-    return a_priority.IsHigherPriorityThan(b_priority);
+    return b_priority.IsHigherPriorityThan(a_priority);
   }
 
  private:
   WhichTree tree_;
 };
 }  // namespace
 
 scoped_ptr<PictureLayerTiling> PictureLayerTiling::Create(
     float contents_scale,
     const gfx::Size& layer_bounds,
@@ skipping 878 matching lines @@
   tiling_->UpdateEvictionCacheIfNeeded(tree_);
   tile_iterator_ = tiling_->eviction_tiles_cache_.begin();
   is_valid_ = true;
   if (tile_iterator_ != tiling_->eviction_tiles_cache_.end() &&
       !(*tile_iterator_)->HasResources()) {
     ++(*this);
   }
 }
 
 }  // namespace cc