webrtc: prepare for running under remote_run

scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux64_release__gn_.json

Index: scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux64_release__gn_.json
diff --git a/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux64_release__gn_.json b/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux64_release__gn_.json
index 31e274c03b00ad1ccb98c5c6cb6ada5e427b5892..07cc1d4e12fcf83e3540ea2fbbd02d6dd07e8aa6 100644
--- a/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux64_release__gn_.json
+++ b/scripts/slave/recipes/webrtc/standalone.expected/client_webrtc_linux64_release__gn_.json
@@ -3,6 +3,28 @@
     "cmd": [
       "python",
       "-u",
+      "\nimport sys, os\npath = sys.argv[1]\nmode = int(sys.argv[2])\nif not os.path.isdir(path):\n  if os.path.exists(path):\n    print \"%s exists but is not a dir\" % path\n    sys.exit(1)\n  os.makedirs(path, mode)\n",
+      "[BUILDER_CACHE]/Linux64_Release__GN_",
+      "511"
+    ],
+    "name": "makedirs checkout path",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys, os@@@",
+      "@@@STEP_LOG_LINE@python.inline@path = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@mode = int(sys.argv[2])@@@",
+      "@@@STEP_LOG_LINE@python.inline@if not os.path.isdir(path):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  if os.path.exists(path):@@@",
+      "@@@STEP_LOG_LINE@python.inline@    print \"%s exists but is not a dir\" % path@@@",
+      "@@@STEP_LOG_LINE@python.inline@    sys.exit(1)@@@",
+      "@@@STEP_LOG_LINE@python.inline@  os.makedirs(path, mode)@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
       "RECIPE_MODULE[depot_tools::bot_update]/resources/bot_update.py",
       "--master",
       "client.webrtc",
@@ -24,6 +46,7 @@
       "src@12345",
       "--output_manifest"
     ],
+    "cwd": "[BUILDER_CACHE]/Linux64_Release__GN_",
     "env": {
       "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]"
     },
@@ -60,7 +83,7 @@
       "python",
       "-u",
       "RECIPE_MODULE[build::webrtc]/resources/cleanup_files.py",
-      "[SLAVE_BUILD]/src/out"
+      "[BUILDER_CACHE]/Linux64_Release__GN_/src/out"
     ],
     "name": "clean test output files"
   },
@@ -136,7 +159,7 @@
       "RECIPE_PACKAGE_REPO[depot_tools]/gclient.py",
       "runhooks"
     ],
-    "cwd": "[SLAVE_BUILD]/src",
+    "cwd": "[BUILDER_CACHE]/Linux64_Release__GN_/src",
     "env": {
       "GOMA_SERVICE_ACCOUNT_JSON_FILE": "/creds/service_accounts/service-account-goma-client.json",
       "GYP_CHROMIUM_NO_ACTION": "1",
@@ -149,8 +172,8 @@
     "cmd": [
       "python",
       "-u",
-      "[DEPOT_TOOLS]/gn.py",
-      "--root=[SLAVE_BUILD]/src",
+      "RECIPE_PACKAGE_REPO[depot_tools]/gn.py",
+      "--root=[BUILDER_CACHE]/Linux64_Release__GN_/src",
       "gen",
       "//out/Release",
       "--args=ffmpeg_branding=\"Chrome\" rtc_use_h264=true is_debug=false target_cpu=\"x64\" use_goma=true goma_dir=\"[CACHE]/cipd/goma\""
@@ -172,9 +195,11 @@
       "--target",
       "Release",
       "--src-dir",
-      "[SLAVE_BUILD]/src",
+      "[BUILDER_CACHE]/Linux64_Release__GN_/src",
       "--goma-cache-dir",
       "[GOMA_CACHE]",
+      "--goma-deps-cache-dir",
+      "[GOMA_DEPS_CACHE]",
       "--compiler",
       "goma",
       "--goma-jsonstatus",