GN: turn off ccache

infra/bots/recipes/swarm_compile.expected/Build-Ubuntu-Clang-x86_64-Debug-GN.json

Index: infra/bots/recipes/swarm_compile.expected/Build-Ubuntu-Clang-x86_64-Debug-GN.json
diff --git a/infra/bots/recipes/swarm_compile.expected/Build-Ubuntu-Clang-x86_64-Debug-GN.json b/infra/bots/recipes/swarm_compile.expected/Build-Ubuntu-Clang-x86_64-Debug-GN.json
index c0873c9a31bfe1f88e6ab104443416cfb112a05c..689994c7e19887ed4cf9bf71d314ba689dc617f3 100644
--- a/infra/bots/recipes/swarm_compile.expected/Build-Ubuntu-Clang-x86_64-Debug-GN.json
+++ b/infra/bots/recipes/swarm_compile.expected/Build-Ubuntu-Clang-x86_64-Debug-GN.json
@@ -76,38 +76,6 @@
   },
   {
     "cmd": [
-      "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": "Debug",
-      "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-Clang-x86_64-Debug-GN"
-    },
-    "name": "has ccache?",
-    "stdout": "/path/to/tmp/json",
-    "~followup_annotations": [
-      "@@@STEP_LOG_LINE@json.output@{@@@",
-      "@@@STEP_LOG_LINE@json.output@  \"ccache\": \"/usr/bin/ccache\"@@@",
-      "@@@STEP_LOG_LINE@json.output@}@@@",
-      "@@@STEP_LOG_END@json.output@@@",
-      "@@@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",
@@ -121,7 +89,7 @@
       "gn",
       "gen",
       "[CUSTOM_/_B_WORK]/skia/out/Build-Ubuntu-Clang-x86_64-Debug-GN/Debug",
-      "--args=cc=\"[SLAVE_BUILD]/clang_linux/bin/clang\" compiler_prefix=\"/usr/bin/ccache\" cxx=\"[SLAVE_BUILD]/clang_linux/bin/clang++\" extra_cflags=\"-Qunused-arguments\" extra_ldflags=\"-fuse-ld=lld\" is_debug=true"
+      "--args=cc=\"[SLAVE_BUILD]/clang_linux/bin/clang\" cxx=\"[SLAVE_BUILD]/clang_linux/bin/clang++\" extra_cflags=\"\" extra_ldflags=\"-fuse-ld=lld\" is_debug=true"
     ],
     "cwd": "[CUSTOM_/_B_WORK]/skia",
     "env": {