GN: Add -Wl,-z defs on linux and fix errors

ash/BUILD.gn

Index: ash/BUILD.gn
diff --git a/ash/BUILD.gn b/ash/BUILD.gn
index 6a928485cfc2f68de5353bc43b90b393cd08b7a3..f2a265cf2b6d23cca0fce7f3e8b7e0600724fcfe 100644
--- a/ash/BUILD.gn
+++ b/ash/BUILD.gn
@@ -64,7 +64,15 @@ component("ash") {
   }
 
   if (use_x11) {
-    configs += [ "//build/config/linux:xfixes" ]
+    configs += [
+      "//build/config/linux:x11",
+      "//build/config/linux:xfixes",
+    ]
+    deps += [
+      "//ui/events:gesture_detection",
+      "//ui/events/platform",
+      "//ui/gfx/x",
+    ]
   } else {
     sources -= [
       "host/ash_window_tree_host_x11.cc",
@@ -76,6 +84,11 @@ component("ash") {
 
   if (use_ozone) {
     deps += [ "//ui/ozone" ]
+  } else {
+    sources -= [
+      "wm/maximize_mode/scoped_disable_internal_mouse_and_keyboard_ozone.cc",
+      "wm/maximize_mode/scoped_disable_internal_mouse_and_keyboard_ozone.h",
+    ]
   }
 
   if (is_chromeos) {