Remove hard-coded sdk build tools path from test_runner_py target.

build/android/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/android/config.gni")
 import("//build/config/android/rules.gni")
 
 if (enable_java_templates) {
   import("//third_party/ijar/ijar.gni")
 
@@ skipping 96 matching lines @@
   _py_files = read_file("test_runner.pydeps", "list lines")
 
   # Filter out comments.
   set_sources_assignment_filter([ "#*" ])
   sources = _py_files
 
   data = sources + [
            "devil_chromium.json",
            "pylib/gtest/filter/",
            "test_wrapper/logdog_wrapper.py",
-           "//third_party/android_tools/sdk/build-tools/24.0.2/aapt",
-           "//third_party/android_tools/sdk/build-tools/24.0.2/dexdump",
-           "//third_party/android_tools/sdk/build-tools/24.0.2/lib64/libc++.so",
-           "//third_party/android_tools/sdk/build-tools/24.0.2/split-select",
-           "//third_party/android_tools/sdk/platform-tools/adb",
+           "${android_sdk_build_tools}/aapt",
+           "${android_sdk_build_tools}/dexdump",
+           "${android_sdk_build_tools}/lib64/libc++.so",
+           "${android_sdk_build_tools}/split-select",
+           "${android_sdk_root}/platform-tools/adb",
            "//third_party/catapult/third_party/gsutil/",
            "//third_party/catapult/devil/devil/devil_dependencies.json",
            "//third_party/proguard/lib/proguard.jar",
          ]
 }
 
 # Create wrapper scripts in out/bin that takes care of setting the
 # --output-directory.
 _scripts_to_wrap = [
   # TODO(agrieve): Once GYP is no more, delete the checked-in adb_gdb_* scripts
@@ skipping 12 matching lines @@
   _target_name = get_path_info(script, "name") + "_wrapper"
   _wrapper_targets += [ ":$_target_name" ]
   wrapper_script(_target_name) {
     target = script
   }
 }
 
 group("wrapper_scripts") {
   deps = _wrapper_targets
 }