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

cc/output/vulkan_renderer.cc

Index: cc/output/vulkan_renderer.cc
diff --git a/cc/output/vulkan_renderer.cc b/cc/output/vulkan_renderer.cc
index a285c6566f2dc589398770530ca0154edd452e1c..2289035b3213b3e2d6a934f840c779e0a499519e 100644
--- a/cc/output/vulkan_renderer.cc
+++ b/cc/output/vulkan_renderer.cc
@@ -6,14 +6,14 @@
 
 namespace cc {
 
-scoped_ptr<VulkanRenderer> VulkanRenderer::Create(
+std::unique_ptr<VulkanRenderer> VulkanRenderer::Create(
     RendererClient* client,
     const RendererSettings* settings,
     OutputSurface* output_surface,
     ResourceProvider* resource_provider,
     TextureMailboxDeleter* texture_mailbox_deleter,
     int highp_threshold_min) {
-  return scoped_ptr<VulkanRenderer>(
+  return std::unique_ptr<VulkanRenderer>(
       new VulkanRenderer(client, settings, output_surface, resource_provider,
                          texture_mailbox_deleter, highp_threshold_min));
 }
@@ -110,7 +110,7 @@ void VulkanRenderer::EnsureBackbuffer() {
 
 void VulkanRenderer::CopyCurrentRenderPassToBitmap(
     DrawingFrame* frame,
-    scoped_ptr<CopyOutputRequest> request) {
+    std::unique_ptr<CopyOutputRequest> request) {
   NOTIMPLEMENTED();
 }