Add remoting and PPAPI tests to GN build

remoting/base/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.
 
-static_library("base") {
-  gypi_values = exec_script("//build/gypi_to_gn.py",
-                            [ rebase_path("../remoting_srcs.gypi") ],
-                            "scope",
-                            [ "../remoting_srcs.gypi" ])
+import("//remoting/remoting_srcs.gni")
 
-  sources = rebase_path(gypi_values.remoting_base_sources, ".", "//remoting")
+source_set("base") {
+  sources = rebase_path(remoting_srcs_gypi_values.remoting_base_sources,
+                        ".",
+                        "//remoting")
 
   configs += [ "//build/config/compiler:wexit_time_destructors" ]
 
   public_deps = [
     "//base",
     "//net",
     "//remoting/proto",
     "//third_party/protobuf:protobuf_lite",
   ]
   deps = [
     "//base/third_party/dynamic_annotations",
     "//media",
     "//media:shared_memory_support",
     "//remoting/resources",
     "//third_party/libvpx",
     "//third_party/libyuv",
-    "//third_party/opus",
     "//third_party/webrtc/modules/desktop_capture",
     "//ui/base",
-    "//ui/gfx",
-    "//ui/gfx/geometry",
   ]
 }
+
+source_set("unit_tests") {
+  testonly = true
+
+  sources = [
+    "auth_token_util_unittest.cc",
+    "auto_thread_task_runner_unittest.cc",
+    "auto_thread_unittest.cc",
+    "breakpad_win_unittest.cc",
+    "buffered_socket_writer_unittest.cc",
+    "capabilities_unittest.cc",
+    "compound_buffer_unittest.cc",
+    "rate_counter_unittest.cc",
+    "rsa_key_pair_unittest.cc",
+    "run_all_unittests.cc",
+    "running_average_unittest.cc",
+    "test_rsa_key_pair.h",
+    "typed_buffer_unittest.cc",
+    "util_unittest.cc",
+  ]
+
+  if (is_win || is_mac || is_chromeos) {
+    sources += [ "resources_unittest.cc" ]
+  }
+
+  deps = [
+    ":base",
+    "//base",
+    "//net:test_support",
+    "//testing/gmock",
+    "//testing/gtest",
+    "//third_party/libyuv",
+    "//third_party/webrtc/modules/desktop_capture",
+  ]
+}