SetNeedsRedraw directly when updating a visible tile.

cc/layers/picture_layer_impl.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/layers/picture_layer_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <set>
 
@@ skipping 1421 matching lines @@
       // iterators.
       if (!tile)
         continue;
 
       // We can't check tile->required_for_activation, because that value might
       // be out of date. It is updated in the raster/eviction iterators.
       // TODO(vmpstr): Remove the comment once you can't access this information
       // from the tile.
       if (is_tile_required_callback.Run(tiling, tile) &&
           !tile->IsReadyToDraw()) {
-        TRACE_EVENT_INSTANT0("cc",
-                             "Tile required, but not ready to draw.",
+        TRACE_EVENT_INSTANT0("cc", "Tile required, but not ready to draw.",
                              TRACE_EVENT_SCOPE_THREAD);
         return false;
       }
     }
   }
 
   return true;
 }
 
 namespace {
@@ skipping 292 matching lines @@
       PictureLayerTilingSet::TilingRange tiling_range = CurrentTilingRange();
       size_t current_tiling_range_offset = current_tiling_ - tiling_range.start;
       return tiling_range.end - 1 - current_tiling_range_offset;
     }
   }
   NOTREACHED();
   return 0;
 }
 
 }  // namespace cc