Added gvr-android-sdk to third_party/

third_party/gvr-android-sdk/BUILD.gn

+# Copyright 2016 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/android/rules.gni")
+
+source_set("libgvr") {
+  deps = [
+    ":libgvr_shared_library",
+  ]
+  libs = [ "$root_out_dir/libgvr.so" ]
+}
+
+copy("libgvr_shared_library") {
+  if (target_cpu == "arm") {
+    sources = [
+      "src/ndk-beta/lib/android_arm/libgvr.so",

[Nico, 2016/06/30 20:17:24]

Is the SDK open-source? If so, can we compile it instead of using the .so?
Benefits of that over binary blobs:
* that code will be instrumented in asan (and other *san) builds
* it's more clear what we link in

+    ]
+  } else if (target_cpu == "arm64") {
+    sources = [
+      "src/ndk-beta/lib/android_arm64/libgvr.so",
+    ]
+  } else if (target_cpu == "x86") {
+    sources = [
+      "src/ndk-beta/lib/android_x86/libgvr.so",
+    ]
+  } else if (target_cpu == "x64") {
+    sources = [
+      "src/ndk-beta/lib/android_x86_64/libgvr.so",
+    ]
+  }
+  outputs = [
+    "${root_out_dir}/libgvr.so",
+  ]
+}
+
+config("libgvr_config") {
+  include_dirs = [ "src/ndk-beta/include/" ]
+}