Make recipes use the new way of enabling goma.

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

 [
   {
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/cleanup_temp.py"
     ],
     "name": "cleanup temp"
   },
   {
@@ skipping 71 matching lines @@
     ]
   },
   {
     "cmd": [
       "python",
       "-u",
       "[DEPOT_TOOLS]/gclient.py",
       "runhooks"
     ],
     "env": {
-      "GYP_DEFINES": "clang=1 component=shared_library disable_glibcxx_debug=1 internal_gles2_conform_tests=1 target_arch=ia32",
+      "GYP_DEFINES": "clang=1 component=shared_library disable_glibcxx_debug=1 gomadir=[BUILD]/goma internal_gles2_conform_tests=1 target_arch=ia32 use_goma=1",
       "GYP_GENERATORS": "ninja"
     },
     "name": "gclient runhooks"
   },
   {
     "abort_on_failure": true,
     "cmd": [
       "python",
       "-u",
       "[BUILD]/scripts/slave/compile.py",
       "--target",
       "Debug",
       "--src-dir",
       "[SLAVE_BUILD]/src",
       "--build-tool",
       "ninja",
       "--compiler",
       "goma-clang",
+      "--goma-dir",
+      "[BUILD]/goma",
       "--",
       "chromium_gpu_debug_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 336 matching lines @@
       "[SLAVE_BUILD]/src/content/test/gpu/run_gpu_test.py",
       "gpu_process",
       "--show-stdout",
       "--output-format=gtest",
       "--browser=debug",
       "-v"
     ],
     "name": "gpu_process_launch_tests"
   }
 ]