Migrate page_load_metrics out of components.

components/page_load_metrics/common/BUILD.gn

Index: components/page_load_metrics/common/BUILD.gn
diff --git a/components/page_load_metrics/common/BUILD.gn b/components/page_load_metrics/common/BUILD.gn
deleted file mode 100644
index 8ba2aad4599b5c77c6530deb8677c1274429f618..0000000000000000000000000000000000000000
--- a/components/page_load_metrics/common/BUILD.gn
+++ /dev/null
@@ -1,17 +0,0 @@
-# Copyright 2015 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-
-# GYP version: components/page_load_metrics.gypi:page_load_metrics_common
-static_library("common") {
-  sources = [
-    "page_load_metrics_messages.cc",
-    "page_load_metrics_messages.h",
-    "page_load_timing.cc",
-    "page_load_timing.h",
-  ]
-  deps = [
-    "//base",
-    "//ipc",
-  ]
-}