GN: ui/events/platform target from r270816

This adds the //ui/events/platform target and adds a dependency from //ui/gl

R=sadrul@chromium.org

Review URL: https://codereview.chromium.org/317823009

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@275474 0039d316-1c4b-4281-b951-d872f2087c98

ui/events/BUILD.gn

@@ -44,6 +44,7 @@ component("events_base") {
     "//base",
     "//base/third_party/dynamic_annotations",
     "//skia",
+    "//ui/events/platform",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]
@@ -110,14 +111,6 @@ component("events") {
     "gestures/gesture_types.h",
     "gestures/velocity_calculator.cc",
     "gestures/velocity_calculator.h",
-    "platform/platform_event_dispatcher.h",
-    "platform/platform_event_observer.h",
-    "platform/platform_event_source.cc",
-    "platform/platform_event_source.h",
-    "platform/platform_event_source_stub.cc",
-    "platform/platform_event_types.h",
-    "platform/scoped_event_dispatcher.cc",
-    "platform/scoped_event_dispatcher.h",
     "platform/x11/x11_event_source.cc",
     "platform/x11/x11_event_source.h",
     "win/events_win.cc",

ui/events/platform/BUILD.gn

+# 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("platform") {
+  deps = [
+    "//base"
+  ]
+
+  defines = [
+    "EVENTS_IMPLEMENTATION",
+  ]
+
+  sources = [
+    "platform_event_dispatcher.h",
+    "platform_event_observer.h",
+    "platform_event_source.cc",
+    "platform_event_source.h",
+    "platform_event_source_stub.cc",
+    "platform_event_types.h",
+    "scoped_event_dispatcher.cc",
+    "scoped_event_dispatcher.h",
+  ]
+
+  if (use_x11) {
+    sources -= [ "platform_event_source_stub.cc" ]
+  }
+}

ui/gl/BUILD.gn

@@ -117,6 +117,7 @@ component("gl") {
     "//gpu/command_buffer/common",
     "//third_party/mesa:mesa_headers",
     "//skia",
+    "//ui/events/platform",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]