[cc] Add nearest neighbor filtering for PictureLayer.

cc/layers/picture_layer_impl.cc

Index: cc/layers/picture_layer_impl.cc
diff --git a/cc/layers/picture_layer_impl.cc b/cc/layers/picture_layer_impl.cc
index eb90e955d9e699b613001cf3552de27af76fdc81..6905d2abeb2aab6c0f05ca325de40cfc17f232c4 100644
--- a/cc/layers/picture_layer_impl.cc
+++ b/cc/layers/picture_layer_impl.cc
@@ -88,7 +88,8 @@ PictureLayerImpl::PictureLayerImpl(LayerTreeImpl* tree_impl, int id)
       needs_post_commit_initialization_(true),
       should_update_tile_priorities_(false),
       only_used_low_res_last_append_quads_(false),
-      is_mask_(false) {
+      is_mask_(false),
+      nearest_neighbor_(false) {
   layer_tree_impl()->RegisterPictureLayerImpl(this);
 }
 
@@ -134,6 +135,7 @@ void PictureLayerImpl::PushPropertiesTo(LayerImpl* base_layer) {
   layer_impl->twin_layer_ = this;
 
   layer_impl->set_is_mask(is_mask_);
+  layer_impl->SetNearestNeighbor(nearest_neighbor_);
   layer_impl->UpdateRasterSource(raster_source_);
 
   DCHECK_IMPLIES(raster_source_->IsSolidColor(), tilings_->num_tilings() == 0);
@@ -250,8 +252,9 @@ void PictureLayerImpl::AppendQuads(RenderPass* render_pass,
     PictureDrawQuad* quad =
         render_pass->CreateAndAppendDrawQuad<PictureDrawQuad>();
     quad->SetNew(shared_quad_state, geometry_rect, opaque_rect,
-                 visible_geometry_rect, texture_rect, texture_size, RGBA_8888,
-                 quad_content_rect, max_contents_scale, raster_source_);
+                 visible_geometry_rect, texture_rect, texture_size,
+                 nearest_neighbor_, RGBA_8888, quad_content_rect,
+                 max_contents_scale, raster_source_);
     return;
   }
 
@@ -363,7 +366,8 @@ void PictureLayerImpl::AppendQuads(RenderPass* render_pass,
                        draw_info.get_resource_id(),
                        texture_rect,
                        iter.texture_size(),
-                       draw_info.contents_swizzled());
+                       draw_info.contents_swizzled(),
+                       nearest_neighbor_);
           has_draw_quad = true;
           break;
         }
@@ -385,8 +389,8 @@ void PictureLayerImpl::AppendQuads(RenderPass* render_pass,
               render_pass->CreateAndAppendDrawQuad<PictureDrawQuad>();
           quad->SetNew(shared_quad_state, geometry_rect, opaque_rect,
                        visible_geometry_rect, texture_rect, iter.texture_size(),
-                       format, iter->content_rect(), iter->contents_scale(),
-                       raster_source_);
+                       nearest_neighbor_, format, iter->content_rect(),
+                       iter->contents_scale(), raster_source_);
           has_draw_quad = true;
           break;
         }
@@ -861,6 +865,13 @@ void PictureLayerImpl::GetContentsResourceId(
   *resource_size = iter.texture_size();
 }
 
+void PictureLayerImpl::SetNearestNeighbor(bool nearest_neighbor) {
+  if (nearest_neighbor_ != nearest_neighbor) {

[danakj, 2014/12/09 19:44:45]

if == return

[jackhou1, 2014/12/10 01:04:15]

Done.

+    nearest_neighbor_ = nearest_neighbor;
+    SetNeedsPushProperties();

[danakj, 2014/12/09 19:44:45]

NoteLayerPropertyChanged instead

[jackhou1, 2014/12/10 01:04:15]

Done.

+  }
+}
+
 void PictureLayerImpl::DoPostCommitInitialization() {
   DCHECK(needs_post_commit_initialization_);
   DCHECK(layer_tree_impl()->IsPendingTree());