cc: Move draw params from SetExternalDrawConstraints to OnDraw

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 <cmath>
 #include <limits>
 #include <set>
@@ skipping 248 matching lines @@
                                 width);
     }
   }
 
   // Keep track of the tilings that were used so that tilings that are
   // unused can be considered for removal.
   last_append_quads_tilings_.clear();
 
   // Ignore missing tiles outside of viewport for tile priority. This is
   // normally the same as draw viewport but can be independently overridden by
-  // embedders like Android WebView with SetExternalDrawConstraints.
+  // embedders like Android WebView with SetExternalTilePriorityConstraints.
   gfx::Rect scaled_viewport_for_tile_priority = gfx::ScaleToEnclosingRect(
       viewport_rect_for_tile_priority_in_content_space_, max_contents_scale);
 
   size_t missing_tile_count = 0u;
   size_t on_demand_missing_tile_count = 0u;
   only_used_low_res_last_append_quads_ = true;
   gfx::Rect scaled_recorded_viewport = gfx::ScaleToEnclosingRect(
       raster_source_->RecordedViewport(), max_contents_scale);
   for (PictureLayerTilingSet::CoverageIterator iter(
            tilings_.get(), max_contents_scale,
@@ skipping 969 matching lines @@
 
 bool PictureLayerImpl::IsOnActiveOrPendingTree() const {
   return !layer_tree_impl()->IsRecycleTree();
 }
 
 bool PictureLayerImpl::HasValidTilePriorities() const {
   return IsOnActiveOrPendingTree() && IsDrawnRenderSurfaceLayerListMember();
 }
 
 }  // namespace cc