Add more dirs to gn check set

.gn

 # This file is used by the experimental meta-buildsystem in src/tools/gn to
 # find the root of the source tree and to set startup options.
 
 # The location of the build configuration file.
 buildconfig = "//build/config/BUILDCONFIG.gn"
 
 # The secondary source root is a parallel directory tree where
 # GN build files are placed when they can not be placed directly
 # in the source tree, e.g. for third party source trees.
 secondary_source = "//build/secondary/"
 
 # The set of targets known to pass 'gn check'. When all targets pass, remove
 # this.
 check_targets = [
+  "//cc/*",
+  "//crypto/*",
+  "//dart/*",
   "//examples/*",
+  "//gin/*",
   "//mojo/*",
+  "//mojom/*",
   "//services/*",
   "//shell/*",
+  "//skia/*",
   "//sky/*",
   "//ui/*",
+  "//url/*",
 ]