SetNeedsRedraw directly when updating a visible tile.

cc/resources/tile_manager.cc

Index: cc/resources/tile_manager.cc
diff --git a/cc/resources/tile_manager.cc b/cc/resources/tile_manager.cc
index d7f4915204ee13e9f3972161d02b2bc10587901f..8ada087aa448dfe22efea70586a7f3208fab7939 100644
--- a/cc/resources/tile_manager.cc
+++ b/cc/resources/tile_manager.cc
@@ -219,7 +219,6 @@ TileManager::TileManager(
       scheduled_raster_task_limit_(scheduled_raster_task_limit),
       all_tiles_that_need_to_be_rasterized_are_scheduled_(true),
       rendering_stats_instrumentation_(rendering_stats_instrumentation),
-      did_initialize_visible_tile_(false),
       did_check_for_completed_tasks_since_last_schedule_tasks_(true),
       did_oom_on_last_assign_(false),
       ready_to_activate_check_notifier_(
@@ -371,9 +370,7 @@ void TileManager::DidFinishRunningTasks(TaskSet task_set) {
   }
 
   if (task_set == REQUIRED_FOR_DRAW) {
-    TRACE_EVENT1("cc",
-                 "TileManager::DidFinishRunningTasks",
-                 "task_set",
+    TRACE_EVENT1("cc", "TileManager::DidFinishRunningTasks", "task_set",
                  "REQUIRED_FOR_DRAW");
     ready_to_draw_check_notifier_.Schedule();
     return;
@@ -422,7 +419,7 @@ void TileManager::ManageTiles(const GlobalStateThatImpactsTilePriority& state) {
                         resource_pool_->acquired_memory_usage_bytes());
 }
 
-bool TileManager::UpdateVisibleTiles() {
+void TileManager::UpdateVisibleTiles() {
   TRACE_EVENT0("cc", "TileManager::UpdateVisibleTiles");
 
   rasterizer_->CheckForCompletedTasks();
@@ -435,10 +432,6 @@ bool TileManager::UpdateVisibleTiles() {
       "stats",
       RasterTaskCompletionStatsAsValue(update_visible_tiles_stats_));
   update_visible_tiles_stats_ = RasterTaskCompletionStats();
-
-  bool did_initialize_visible_tile = did_initialize_visible_tile_;
-  did_initialize_visible_tile_ = false;
-  return did_initialize_visible_tile;
 }
 
 scoped_refptr<base::debug::ConvertableToTraceFormat>
@@ -817,9 +810,6 @@ void TileManager::OnRasterTaskCompleted(
     mts.draw_info.resource_ = resource.Pass();
   }
 
-  if (tile->priority(ACTIVE_TREE).distance_to_visible == 0.f)
-    did_initialize_visible_tile_ = true;
-
   client_->NotifyTileStateChanged(tile);
 }
 
@@ -868,8 +858,7 @@ bool TileManager::IsReadyToDraw() const {
   const std::vector<PictureLayerImpl*>& layers = client_->GetPictureLayers();
 
   for (std::vector<PictureLayerImpl*>::const_iterator it = layers.begin();
-       it != layers.end();
-       ++it) {
+       it != layers.end(); ++it) {
     if (!(*it)->AllTilesRequiredForDrawAreReadyToDraw())
       return false;
   }