Initial implementation of Cookie service.

content/common/BUILD.gn

Index: content/common/BUILD.gn
diff --git a/content/common/BUILD.gn b/content/common/BUILD.gn
index bebbdfdd713076a9256da18736239a9cc9caba5d..81f180d7a0b5df795ea47d3961d5b36247f07082 100644
--- a/content/common/BUILD.gn
+++ b/content/common/BUILD.gn
@@ -102,6 +102,10 @@ source_set("common") {
     "content_security_policy_header.h",
     "content_switches_internal.cc",
     "content_switches_internal.h",
+    "cookie_service_impl.cc",
+    "cookie_service_impl.h",
+    "cookies_traits.cc",
+    "cookies_traits.h",
     "cross_site_document_classifier.cc",
     "cross_site_document_classifier.h",
     "cursors/webcursor.cc",
@@ -601,6 +605,7 @@ mojom("mojo_bindings") {
     "associated_interfaces.mojom",
     "child.mojom",
     "child_memory_coordinator.mojom",
+    "cookies.mojom",
     "field_trial_recorder.mojom",
     "frame.mojom",
     "frame_sink_provider.mojom",