CC: Add a scheduled action for ManageTiles

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 3e91167866031a18cb3c342f37f4f1fa4c9d3c1b..465dfc3a459c0ccca183d30ce11a85c435e53929 100644
--- a/cc/resources/tile_manager.cc
+++ b/cc/resources/tile_manager.cc
@@ -241,6 +241,13 @@ void TileManager::DidFinishRunningTasks() {
     return;
   }
 
+  // We don't reserve memory for required-for-activate tiles during smoothness
+  // mode, so it is very likely these tiles will not get memory. So we prevent
+  // raster-on-demand and simply don't activate in this case.
+  bool allow_rasterize_on_demand = global_state_.tree_priority
+                                   != SMOOTHNESS_TAKES_PRIORITY;
+  bool can_activate = true;

[reveman, 2013/09/03 19:03:21]

can you drop this and just early out below when you find a tile that need
raster-on-demand but "global_state_.tree_priority == SMOOTHNESS_TAKES_PRIORITY"?

[epenner, 2013/09/03 19:36:29]

Good one! Done.

+
   // Use on-demand raster for any required-for-activation tiles that have not
   // been been assigned memory after reaching a steady memory state. This
   // ensures that we activate even when OOM.
@@ -250,11 +257,16 @@ void TileManager::DidFinishRunningTasks() {
     ManagedTileState::TileVersion& tile_version =
         mts.tile_versions[mts.raster_mode];
 
-    if (tile->required_for_activation() && !tile_version.IsReadyToDraw())
-      tile_version.set_rasterize_on_demand();
+    if (tile->required_for_activation() && !tile_version.IsReadyToDraw()) {
+      if (allow_rasterize_on_demand)
+        tile_version.set_rasterize_on_demand();
+      else
+        can_activate = false;
+    }
   }
 
-  client_->NotifyReadyToActivate();
+  if (can_activate)
+    client_->NotifyReadyToActivate();
 }
 
 void TileManager::DidFinishRunningTasksRequiredForActivation() {