HUD: Show first paint invalidation in red

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 "base/debug/trace_event_argument.h"
@@ skipping 1390 matching lines @@
   state->EndArray();
 
   state->BeginArray("pictures");
   pile_->AsValueInto(state);
   state->EndArray();
 
   state->BeginArray("invalidation");
   invalidation_.AsValueInto(state);
   state->EndArray();
 
+  state->SetBoolean(
+      "invalidation_includes_first_paint",
+      debug_info() && debug_info()->IncludesFirstPaintInvalidation());
+
   state->BeginArray("coverage_tiles");
   for (PictureLayerTilingSet::CoverageIterator iter(tilings_.get(),
                                                     contents_scale_x(),
                                                     gfx::Rect(content_bounds()),
                                                     ideal_contents_scale_);
        iter;
        ++iter) {
     state->BeginDictionary();
 
     state->BeginArray("geometry_rect");
@@ skipping 330 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