Make recipes use the new way of enabling goma.

scripts/slave/recipes/gpu/build_and_upload.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 38 matching lines @@
       "--build-url",
       "gs://chromium-gpu-archive/chromium.gpu.testing/mac debug builder",
       "--factory-properties",
       "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"branch\": \"TestBranch\", \"build_config\": \"Debug\", \"buildername\": \"mac debug builder\", \"buildnumber\": 571, \"mastername\": \"chromium.gpu.testing\", \"project\": \"\", \"recipe\": \"gpu/build_and_upload\", \"repository\": \"svn://svn-mirror.golo.chromium.org/chrome/trunk\", \"revision\": \"204787\", \"slavename\": \"TestSlavename\", \"workdir\": \"/path/to/workdir/TestSlavename\"}",
       "--build-properties",
       "{\"blamelist\": [\"cool_dev1337@chromium.org\", \"hax@chromium.org\"], \"branch\": \"TestBranch\", \"build_config\": \"Debug\", \"buildername\": \"mac debug builder\", \"buildnumber\": 571, \"mastername\": \"chromium.gpu.testing\", \"project\": \"\", \"recipe\": \"gpu/build_and_upload\", \"repository\": \"svn://svn-mirror.golo.chromium.org/chrome/trunk\", \"revision\": \"204787\", \"slavename\": \"TestSlavename\", \"workdir\": \"/path/to/workdir/TestSlavename\"}"
     ],
     "name": "package_build"
   }
 ]