[cc] Add nearest neighbor filtering for TextureLayer.

cc/layers/painted_scrollbar_layer_impl.cc

 // Copyright 2013 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/painted_scrollbar_layer_impl.h"
 
 #include <algorithm>
 
 #include "cc/animation/scrollbar_animation_controller.h"
 #include "cc/layers/layer.h"
@@ skipping 55 matching lines @@
   DCHECK(draw_mode != DRAW_MODE_RESOURCELESS_SOFTWARE);
   return LayerImpl::WillDraw(draw_mode, resource_provider);
 }
 
 void PaintedScrollbarLayerImpl::AppendQuads(
     RenderPass* render_pass,
     const Occlusion& occlusion_in_content_space,
     AppendQuadsData* append_quads_data) {
   bool premultipled_alpha = true;
   bool flipped = false;
+  bool nearest_neighbor = false;
   gfx::PointF uv_top_left(0.f, 0.f);
   gfx::PointF uv_bottom_right(1.f, 1.f);
   gfx::Rect bounds_rect(bounds());
   gfx::Rect content_bounds_rect(content_bounds());
 
   SharedQuadState* shared_quad_state =
       render_pass->CreateAndAppendSharedQuadState();
   PopulateSharedQuadState(shared_quad_state);
 
   AppendDebugBorderQuad(
@@ skipping 16 matching lines @@
     quad->SetNew(shared_quad_state,
                  thumb_quad_rect,
                  opaque_rect,
                  visible_thumb_quad_rect,
                  thumb_resource_id,
                  premultipled_alpha,
                  uv_top_left,
                  uv_bottom_right,
                  SK_ColorTRANSPARENT,
                  opacity,
-                 flipped);
+                 flipped,
+                 nearest_neighbor);
   }
 
   gfx::Rect track_quad_rect = content_bounds_rect;
   gfx::Rect visible_track_quad_rect =
       occlusion_in_content_space.GetUnoccludedContentRect(track_quad_rect);
   if (track_resource_id && !visible_track_quad_rect.IsEmpty()) {
     gfx::Rect opaque_rect(contents_opaque() ? track_quad_rect : gfx::Rect());
     const float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
     TextureDrawQuad* quad =
         render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
     quad->SetNew(shared_quad_state,
                  track_quad_rect,
                  opaque_rect,
                  visible_track_quad_rect,
                  track_resource_id,
                  premultipled_alpha,
                  uv_top_left,
                  uv_bottom_right,
                  SK_ColorTRANSPARENT,
                  opacity,
-                 flipped);
+                 flipped,
+                 nearest_neighbor);
   }
 }
 
 void PaintedScrollbarLayerImpl::SetThumbThickness(int thumb_thickness) {
   if (thumb_thickness_ == thumb_thickness)
     return;
   thumb_thickness_ = thumb_thickness;
   NoteLayerPropertyChanged();
 }
 
@@ skipping 36 matching lines @@
 
 bool PaintedScrollbarLayerImpl::IsThumbResizable() const {
   return false;
 }
 
 const char* PaintedScrollbarLayerImpl::LayerTypeAsString() const {
   return "cc::PaintedScrollbarLayerImpl";
 }
 
 }  // namespace cc