Convert //cc from scoped_ptr to std::unique_ptr.

cc/output/direct_renderer.cc

Index: cc/output/direct_renderer.cc
diff --git a/cc/output/direct_renderer.cc b/cc/output/direct_renderer.cc
index 7446afdc1c2dba3aa6d14a8d939a9c130472b31d..8bb36e5288b838b44256d5e902474520d4d1b88f 100644
--- a/cc/output/direct_renderer.cc
+++ b/cc/output/direct_renderer.cc
@@ -181,7 +181,7 @@ void DirectRenderer::DecideRenderPassAllocationsForFrame(
 
   for (size_t i = 0; i < render_passes_in_draw_order.size(); ++i) {
     if (render_pass_textures_.count(render_passes_in_draw_order[i]->id) == 0) {
-      scoped_ptr<ScopedResource> texture =
+      std::unique_ptr<ScopedResource> texture =
           ScopedResource::Create(resource_provider_);
       render_pass_textures_[render_passes_in_draw_order[i]->id] =
           std::move(texture);
@@ -397,7 +397,7 @@ void DirectRenderer::DoDrawPolygon(const DrawPolygon& poly,
 }
 
 void DirectRenderer::FlushPolygons(
-    std::deque<scoped_ptr<DrawPolygon>>* poly_list,
+    std::deque<std::unique_ptr<DrawPolygon>>* poly_list,
     DrawingFrame* frame,
     const gfx::Rect& render_pass_scissor,
     bool use_render_pass_scissor) {
@@ -482,7 +482,7 @@ void DirectRenderer::DrawRenderPass(DrawingFrame* frame,
       MoveFromDrawToWindowSpace(frame, render_pass_scissor_in_draw_space));
 
   const QuadList& quad_list = render_pass->quad_list;
-  std::deque<scoped_ptr<DrawPolygon>> poly_list;
+  std::deque<std::unique_ptr<DrawPolygon>> poly_list;
 
   int next_polygon_id = 0;
   int last_sorting_context_id = 0;
@@ -504,7 +504,7 @@ void DirectRenderer::DrawRenderPass(DrawingFrame* frame,
     // This layer is in a 3D sorting context so we add it to the list of
     // polygons to go into the BSP tree.
     if (quad.shared_quad_state->sorting_context_id != 0) {
-      scoped_ptr<DrawPolygon> new_polygon(new DrawPolygon(
+      std::unique_ptr<DrawPolygon> new_polygon(new DrawPolygon(
           *it, gfx::RectF(quad.visible_rect),
           quad.shared_quad_state->quad_to_target_transform, next_polygon_id++));
       if (new_polygon->points().size() > 2u) {