ui: More work to make Linux 'gn check' clean.

Tested on Linux with the following command lines:

$ gn gen out-gn
$ gn check out-gn //ui/*

More work is needed to get this enabled on .gn.

BUG=367595,376000
TEST=see above
R=sky@chromium.org

Review URL: https://codereview.chromium.org/988463003

Cr-Commit-Position: refs/heads/master@{#319895}

ui/aura/BUILD.gn

@@ -186,6 +186,7 @@ source_set("test_support") {
     "//skia",
     "//testing/gtest",
     "//ui/base:test_support",
+    "//ui/base/ime",
     "//ui/compositor:test_support",
     "//ui/events",
     "//ui/events:events_base",

ui/aura_extra/BUILD.gn

@@ -18,6 +18,7 @@ component("aura_extra") {
     "//skia",
     "//ui/aura",
     "//ui/base",
+    "//ui/compositor",
     "//ui/events",
     "//ui/gfx",
     "//ui/gfx/geometry",

ui/display/util/BUILD.gn

@@ -18,6 +18,7 @@ component("util") {
 
   deps = [
     "//base",
+    "//ui/display/types",
     "//ui/gfx/geometry",
   ]
 

ui/wm/BUILD.gn

@@ -141,6 +141,7 @@ test("wm_unittests") {
     "//testing/gtest",
     "//ui/aura:test_support",
     "//ui/base:test_support",
+    "//ui/base/ime",
     "//ui/compositor:test_support",
     "//ui/events:test_support",
     "//ui/events/platform",