allocator cleanup: remove dependencies on allocator from all targets

url/BUILD.gn

Index: url/BUILD.gn
diff --git a/url/BUILD.gn b/url/BUILD.gn
index 5c5b3ba9a13323f08f6ab98872dde0073fb47064..d403efbbe569864ac42aa24e9b4b3c0f33e59a60 100644
--- a/url/BUILD.gn
+++ b/url/BUILD.gn
@@ -139,12 +139,6 @@ if (!is_android) {
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
-    #if (is_posix && !is_mac && !is_ios) {
-    #  if (use_allocator!="none") {
-    #    deps += "//base/allocator"
-    #  }
-    #}
-
     deps = [
       ":url",
       "//base",