cc: Properly detect tiles that are needed now.

cc/tiles/tile_manager.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/tiles/tile_manager.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 655 matching lines @@
     Tile* tile = prioritized_tile.tile();
     TilePriority priority = prioritized_tile.priority();
 
     if (TilePriorityViolatesMemoryPolicy(priority)) {
       TRACE_EVENT_INSTANT0(
           "cc", "TileManager::AssignGpuMemory tile violates memory policy",
           TRACE_EVENT_SCOPE_THREAD);
       break;
     }
 
-    bool tile_is_needed_now = priority.priority_bin == TilePriority::NOW;
+    bool tile_is_needed_now =
+        tile->required_for_activation() || tile->required_for_draw();
     if (!tile->is_solid_color_analysis_performed() &&
         tile->use_picture_analysis() && kUseColorEstimator) {
       // We analyze for solid color here, to decide to continue
       // or drop the tile for scheduling and raster.
       // TODO(sohanjg): Check if we could use a shared analysis
       // canvas which is reset between tiles.
       tile->set_solid_color_analysis_performed(true);
       SkColor color = SK_ColorTRANSPARENT;
       bool is_solid_color =
           prioritized_tile.raster_source()->PerformSolidColorAnalysis(
               tile->content_rect(), tile->contents_scale(), &color);
       if (is_solid_color) {
         tile->draw_info().set_solid_color(color);
         tile->draw_info().set_was_ever_ready_to_draw();
         if (!tile_is_needed_now)
           tile->draw_info().set_was_a_prepaint_tile();
         client_->NotifyTileStateChanged(tile);
         continue;
       }
     }
 
     // Prepaint tiles that are far away are only processed for images.
-    if (!tile->required_for_activation() && !tile->required_for_draw() &&
-        prioritized_tile.is_process_for_images_only()) {
+    if (!tile_is_needed_now && prioritized_tile.is_process_for_images_only()) {
       work_to_schedule.tiles_to_process_for_images.push_back(prioritized_tile);
       continue;
     }
 
     // We won't be able to schedule this tile, so break out early.
     if (work_to_schedule.tiles_to_raster.size() >=
         scheduled_raster_task_limit_) {
       all_tiles_that_need_to_be_rasterized_are_scheduled_ = false;
       break;
     }
@@ skipping 655 matching lines @@
   all_tile_tasks_completed = false;
   did_notify_all_tile_tasks_completed = false;
 }
 
 TileManager::PrioritizedWorkToSchedule::PrioritizedWorkToSchedule() = default;
 TileManager::PrioritizedWorkToSchedule::PrioritizedWorkToSchedule(
     PrioritizedWorkToSchedule&& other) = default;
 TileManager::PrioritizedWorkToSchedule::~PrioritizedWorkToSchedule() = default;
 
 }  // namespace cc