Move gcm_internals resources and constants to //components.

These are moved in order to be shared on iOS.

resource_ids are updated as follows:
generated_resources.grd: -100
components_strings.grd : +70
components_chromium_strings.grd: +10
components_resources.grd: +20

Review URL: https://codereview.chromium.org/1339803003

Cr-Commit-Position: refs/heads/master@{#348949}
diff --git a/components/gcm_driver/BUILD.gn b/components/gcm_driver/BUILD.gn
index 301ced53..e80ac0af 100644
--- a/components/gcm_driver/BUILD.gn
+++ b/components/gcm_driver/BUILD.gn
@@ -39,6 +39,8 @@
     "gcm_driver_android.h",
     "gcm_driver_desktop.cc",
     "gcm_driver_desktop.h",
+    "gcm_internals_constants.cc",
+    "gcm_internals_constants.h",
     "gcm_stats_recorder_impl.cc",
     "gcm_stats_recorder_impl.h",
     "registration_info.cc",