Make recipes use the new way of enabling goma.

scripts/slave/recipes/gpu/build_and_test.expected/mac_release_tryserver.json

 [
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/cleanup_temp.py"
     ],
     "name": "cleanup temp"
   },
   {
@@ skipping 89 matching lines @@
     "name": "apply_issue"
   },
   {
     "cmd": [
       "python",
       "-u",
       "[DEPOT_TOOLS]/gclient.py",
       "runhooks"
     ],
     "env": {
-      "GYP_DEFINES": "clang=1 component=static_library disable_glibcxx_debug=1 internal_gles2_conform_tests=1 target_arch=ia32 test_isolation_mode=archive test_isolation_outdir=https://isolateserver.appspot.com",
+      "GYP_DEFINES": "clang=1 component=static_library disable_glibcxx_debug=1 gomadir=[BUILD]/goma internal_gles2_conform_tests=1 target_arch=ia32 test_isolation_mode=archive test_isolation_outdir=https://isolateserver.appspot.com use_goma=1",
       "GYP_GENERATORS": "ninja"
     },
     "name": "gclient runhooks"
   },
   {
     "abort_on_failure": true,
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/compile.py",
       "--target",
       "Release",
       "--src-dir",
       "[SLAVE_BUILD]/src",
       "--build-tool",
       "ninja",
       "--compiler",
       "goma-clang",
+      "--goma-dir",
+      "[BUILD]/goma",
       "--",
       "chromium_gpu_builder",
       "angle_unittests_run",
       "content_gl_tests_run",
       "gles2_conform_test_run",
       "gl_tests_run",
       "tab_capture_performance_tests_run",
       "telemetry_gpu_test_run"
     ],
     "name": "compile"
@@ skipping 431 matching lines @@
       "https://isolateserver.appspot.com",
       "--",
       "--enable-gpu",
       "--test-launcher-jobs=1",
       "--test-launcher-print-test-stdio=always",
       "--gtest_filter=TabCapturePerformanceTest*"
     ],
     "name": "tab_capture_performance_tests"
   }
 ]