Replace scoped_ptr with std::unique_ptr in //ui

ui/gfx/harfbuzz_font_skia.cc

Index: ui/gfx/harfbuzz_font_skia.cc
diff --git a/ui/gfx/harfbuzz_font_skia.cc b/ui/gfx/harfbuzz_font_skia.cc
index e2adeaff4d91f5e3186626491fca4709855ccfd9..719d4fe36b03fdbd8353417628f9d2f3315b0f95 100644
--- a/ui/gfx/harfbuzz_font_skia.cc
+++ b/ui/gfx/harfbuzz_font_skia.cc
@@ -216,7 +216,7 @@ hb_blob_t* GetFontTable(hb_face_t* face, hb_tag_t tag, void* user_data) {
   if (!table_size)
     return 0;
 
-  scoped_ptr<char[]> buffer(new char[table_size]);
+  std::unique_ptr<char[]> buffer(new char[table_size]);
   if (!buffer)
     return 0;
   size_t actual_size = typeface->getTableData(tag, 0, table_size, buffer.get());