Move LatencyInfo to ui/latency_info

ui/latency_info/BUILD.gn

+# Copyright 2016 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.
+
+import("//testing/test.gni")
+
+component("latency_info") {
+  sources = [
+    "latency_info.cc",
+    "latency_info.h",
+    "latency_info_export.h",
+  ]
+
+  defines = [ "LATENCY_INFO_IMPLEMENTATION" ]
+
+  deps = [
+    "//base",
+  ]
+}
+
+test("latency_info_unittests") {
+  sources = [
+    "latency_info_unittest.cc",
+  ]
+
+  deps = [
+    ":latency_info",
+    "//base",
+    "//base/test:run_all_unittests",
+    "//base/test:test_support",
+    "//testing/gmock",
+    "//testing/gtest",
+  ]
+
+  if (!is_ios) {
+    sources += [ "ipc/latency_info_param_traits_unittest.cc" ]
+    deps += [
+      "//ipc:test_support",
+      "//ui/latency_info/ipc",
+    ]
+  }
+}