cc : Clean up cc clip tree

cc/trees/layer_tree_settings.h

 // Copyright 2011 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.
 
 #ifndef CC_TREES_LAYER_TREE_SETTINGS_H_
 #define CC_TREES_LAYER_TREE_SETTINGS_H_
 
 #include <stddef.h>
 
 #include <vector>
@@ skipping 62 matching lines @@
   int tiling_interest_area_padding = 3000;
   float skewport_target_time_in_seconds = 1.0f;
   int skewport_extrapolation_limit_in_screen_pixels = 2000;
   size_t max_memory_for_prepaint_percentage = 100;
   bool use_zero_copy = false;
   bool use_partial_raster = false;
   bool enable_elastic_overscroll = false;
   bool ignore_root_layer_flings = false;
   size_t scheduled_raster_task_limit = 32;
   bool use_occlusion_for_tile_prioritization = false;
-  bool verify_clip_tree_calculations = false;
 
   // TODO(khushalsagar): Enable for all client and remove this flag if possible.
   // See crbug/com/696864.
   bool image_decode_tasks_enabled = false;
 
   bool use_layer_lists = false;
   int max_staging_buffer_usage_in_bytes = 32 * 1024 * 1024;
   ManagedMemoryPolicy gpu_memory_policy;
   ManagedMemoryPolicy software_memory_policy;
   size_t gpu_decoded_image_budget_bytes = 96 * 1024 * 1024;
@@ skipping 14 matching lines @@
   LayerTreeDebugState initial_debug_state;
 
   // Indicates that the LayerTreeHost should defer commits unless it has a valid
   // LocalSurfaceId set.
   bool needs_valid_local_surface_id = false;
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_LAYER_TREE_SETTINGS_H_