Add chrome, installer_util targets to GN build.

ui/snapshot/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("snapshot") {
   sources = [
     "snapshot.h",
     "snapshot_android.cc",
@@ skipping 24 matching lines @@
     ]
   } else {
     sources -= [
       "snapshot_async.cc",
       "snapshot_async.h",
     ]
   }
 
   if (use_aura) {
     deps += [
-      #"//ui/aura",  TODO(GYP)
+      "//ui/aura",
       "//ui/compositor",
     ]
   } else {
     sources -= [
       "snapshot_aura.cc"
     ]
   }
 }
 
-# TODO(GYP) enable this when all targets are converted and it links
-#test("snapshot_unittests") {
-#  sources = [
-#    "snapshot_aura_unittest.cc",
-#    "snapshot_mac_unittest.mm",
-#    "test/run_all_unittests.cc",
-#  ]
-#
-#  deps = [
-#    "//base",
-#    "//base/allocator",
-#    "//base/test:test_support",
-#    "//skia",
-#    "//testing/gtest",
-#    "//ui/base",
-#    "//ui/gfx",
-#    "//ui/gfx/geometry",
-#  ]
-#
-#  if (use_aura) {
-#    deps += [
-#      #"//ui/aura:test_support",  TODO(GYP)
-#      "//ui/compositor",
-#      "//ui/compositor:test_support",
-#    ]
-#  } else {
-#    sources -= [ "snapshot_aura_unittest.cc" ]
-#  }
-#}
+test("snapshot_unittests") {
+  sources = [
+    "snapshot_aura_unittest.cc",
+    "snapshot_mac_unittest.mm",
+    "test/run_all_unittests.cc",
+  ]
+
+  deps = [
+    ":snapshot",
+    "//base",
+    "//base/allocator",
+    "//base/test:test_support",
+    "//skia",
+    "//testing/gtest",
+    "//ui/base",
+    "//ui/gfx",
+    "//ui/gfx/geometry",
+  ]
+
+  if (use_aura) {
+    deps += [
+      "//ui/aura:test_support",
+      "//ui/compositor",
+      "//ui/compositor:test_support",
+      "//ui/wm",
+    ]
+  } else {
+    sources -= [ "snapshot_aura_unittest.cc" ]
+  }
+}
 
 if (is_win) {
   source_set("test_support") {
     sources = [
       "test/snapshot_desktop.h",
       "test/snapshot_desktop_win.cc",
     ]
     deps = [
       ":snapshot",
     ]
   }
 }