Move LatencyInfo ipc traits from content/common/ to ui/events/ipc/

ui/events/ipc/BUILD.gn

Index: ui/events/ipc/BUILD.gn
diff --git a/ui/events/ipc/BUILD.gn b/ui/events/ipc/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..82ac834cf3d30fc00da29f6b410a6bdf3d40a5a5
--- /dev/null
+++ b/ui/events/ipc/BUILD.gn
@@ -0,0 +1,17 @@
+# Copyright 2014 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("//build/config/ui.gni")
+
+component("events_ipc") {
+ sources = [
+    "latency_info_param_traits.cc",
+    "latency_info_param_traits.h",
+  ]
+
+  defines = [ "EVENTS_IMPLEMENTATION" ]
+
+  deps = [ "//ipc" ]
+}
+