cc: Separate raster and decode prepaint regions.

cc/trees/layer_tree_host_impl.cc

 // 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.
 
 #include "cc/trees/layer_tree_host_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 200 matching lines @@
       settings_(settings),
       visible_(false),
       cached_managed_memory_policy_(settings.memory_policy_),
       is_synchronous_single_threaded_(!task_runner_provider->HasImplThread() &&
                                       !settings.single_thread_proxy_scheduler),
       // Must be initialized after is_synchronous_single_threaded_ and
       // task_runner_provider_.
       // TODO(vmpstr): TileManager takes a scoped reftr for the task runner,
       // figure out if it actually needs a ref or whether it can use a raw
       // pointer.
-      tile_manager_(new TileManager(this,
-                                    GetTaskRunner(),
-                                    is_synchronous_single_threaded_
-                                        ? std::numeric_limits<size_t>::max()
-                                        : settings.scheduled_raster_task_limit,
-                                    settings.use_partial_raster)),
+      tile_manager_(
+          new TileManager(this,
+                          GetTaskRunner(),
+                          is_synchronous_single_threaded_
+                              ? std::numeric_limits<size_t>::max()
+                              : settings.scheduled_raster_task_limit,
+                          settings.use_partial_raster,
+                          settings.max_preraster_distance_in_screen_pixels)),
       pinch_gesture_active_(false),
       pinch_gesture_end_should_clear_scrolling_layer_(false),
       fps_counter_(
           FrameRateCounter::Create(task_runner_provider_->HasImplThread())),
       memory_history_(MemoryHistory::Create()),
       debug_rect_history_(DebugRectHistory::Create()),
       texture_mailbox_deleter_(new TextureMailboxDeleter(GetTaskRunner())),
       max_memory_needed_bytes_(0),
       resourceless_software_draw_(false),
       animation_host_(),
@@ skipping 3770 matching lines @@
     const {
   return fixed_raster_scale_attempted_scale_change_history_.count() >=
          kFixedRasterScaleAttemptedScaleChangeThreshold;
 }
 
 void LayerTreeHostImpl::SetFixedRasterScaleAttemptedToChangeScale() {
   fixed_raster_scale_attempted_scale_change_history_.set(0);
 }
 
 }  // namespace cc