GN: take over some exisiting bots

infra/bots/recipes/swarm_compile.expected/Build-Ubuntu-GCC-x86_64-Release-Fast.json

Index: infra/bots/recipes/swarm_compile.expected/Build-Ubuntu-GCC-x86_64-Release-Fast.json
diff --git a/infra/bots/recipes/swarm_compile.expected/Build-Ubuntu-GCC-x86_64-Release-Fast.json b/infra/bots/recipes/swarm_compile.expected/Build-Ubuntu-GCC-x86_64-Release-Fast.json
index e90faa886a68be5ae3a22f4215d228746116ba9f..5dd7797b654404b2493f6237171af80d5838c9ee 100644
--- a/infra/bots/recipes/swarm_compile.expected/Build-Ubuntu-GCC-x86_64-Release-Fast.json
+++ b/infra/bots/recipes/swarm_compile.expected/Build-Ubuntu-GCC-x86_64-Release-Fast.json
@@ -76,19 +76,80 @@
   },
   {
     "cmd": [
-      "make",
-      "most"
+      "python",
+      "-u",
+      "import json\nimport subprocess\nimport sys\n\nccache = None\ntry:\n  ccache = subprocess.check_output(['which', 'ccache']).rstrip()\nexcept:\n  pass\nprint json.dumps({'ccache': ccache})\n"
+    ],
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[CUSTOM_/_B_WORK]/skia/out/Build-Ubuntu-GCC-x86_64-Release-Fast"
+    },
+    "name": "has ccache?",
+    "stdout": "/path/to/tmp/json",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@json.output (invalid)@null@@@",
+      "@@@STEP_LOG_END@json.output (invalid)@@@",
+      "@@@STEP_LOG_LINE@python.inline@import json@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@ccache = None@@@",
+      "@@@STEP_LOG_LINE@python.inline@try:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  ccache = subprocess.check_output(['which', 'ccache']).rstrip()@@@",
+      "@@@STEP_LOG_LINE@python.inline@except:@@@",
+      "@@@STEP_LOG_LINE@python.inline@  pass@@@",
+      "@@@STEP_LOG_LINE@python.inline@print json.dumps({'ccache': ccache})@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "[CUSTOM_/_B_WORK]/skia/bin/fetch-gn"
+    ],
+    "cwd": "[CUSTOM_/_B_WORK]/skia",
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "GYP_DEFINES": "skia_arch_type=x86_64 skia_fast=1 skia_warnings_as_errors=0",
+      "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[CUSTOM_/_B_WORK]/skia/out/Build-Ubuntu-GCC-x86_64-Release-Fast"
+    },
+    "name": "fetch-gn"
+  },
+  {
+    "cmd": [
+      "gn",
+      "gen",
+      "[CUSTOM_/_B_WORK]/skia/out/Build-Ubuntu-GCC-x86_64-Release-Fast/Release",
+      "--args=is_debug=false cc=\"gcc -march=native -fomit-frame-pointer\" cxx=\"g++ -march=native -fomit-frame-pointer\""
+    ],
+    "cwd": "[CUSTOM_/_B_WORK]/skia",
+    "env": {
+      "BUILDTYPE": "Release",
+      "CHROME_HEADLESS": "1",
+      "GYP_DEFINES": "skia_arch_type=x86_64 skia_fast=1 skia_warnings_as_errors=0",
+      "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]:RECIPE_PACKAGE_REPO[depot_tools]",
+      "SKIA_OUT": "[CUSTOM_/_B_WORK]/skia/out/Build-Ubuntu-GCC-x86_64-Release-Fast"
+    },
+    "name": "gn gen"
+  },
+  {
+    "cmd": [
+      "ninja",
+      "-C",
+      "[CUSTOM_/_B_WORK]/skia/out/Build-Ubuntu-GCC-x86_64-Release-Fast/Release"
     ],
     "cwd": "[CUSTOM_/_B_WORK]/skia",
     "env": {
       "BUILDTYPE": "Release",
       "CHROME_HEADLESS": "1",
-      "CHROME_PATH": "[SLAVE_BUILD]/src",
       "GYP_DEFINES": "skia_arch_type=x86_64 skia_fast=1 skia_warnings_as_errors=0",
       "PATH": "%(PATH)s:RECIPE_PACKAGE_REPO[depot_tools]:RECIPE_PACKAGE_REPO[depot_tools]",
       "SKIA_OUT": "[CUSTOM_/_B_WORK]/skia/out/Build-Ubuntu-GCC-x86_64-Release-Fast"
     },
-    "name": "build most"
+    "name": "ninja"
   },
   {
     "cmd": [