Snazzier dump log step on Android bots.

infra/bots/recipes/swarm_test.expected/failed_get_hashes.json

 [
   {
     "cmd": [
       "adb",
       "shell",
       "mkdir",
       "-p",
       "/sdcard/revenge_of_the_skiabot/resources"
     ],
     "cwd": "[SLAVE_BUILD]/skia",
@@ skipping 549 matching lines @@
       "adb",
       "pull",
       "/sdcard/revenge_of_the_skiabot/dm_out",
       "[CUSTOM_[SWARM_OUT_DIR]]/dm"
     ],
     "cwd": "[SLAVE_BUILD]/skia",
     "name": "pull /sdcard/revenge_of_the_skiabot/dm_out [CUSTOM_[SWARM_OUT_DIR]]/dm"
   },
   {
     "cmd": [
-      "adb",
-      "logcat",
-      "-d"
+      "python",
+      "-u",
+      "\nimport os\nimport subprocess\nimport sys\nout = sys.argv[1]\nlog = subprocess.check_output(['adb', 'logcat', '-d'])\nfor line in log.split('\\n'):\n  tokens = line.split()\n  if len(tokens) == 11 and tokens[-7] == 'F' and tokens[-3] == 'pc':\n    addr, path = tokens[-2:]\n    local = os.path.join(out, os.path.basename(path))\n    if os.path.exists(local):\n      sym = subprocess.check_output(['addr2line', '-Cfpe', local, addr])\n      line = line.replace(addr, addr + ' ' + sym.strip())\n  print line\n",
+      "[SLAVE_BUILD]/out/Debug"
     ],
-    "cwd": "[SLAVE_BUILD]/skia",
-    "name": "dump log"
+    "name": "dump log",
+    "~followup_annotations": [
+      "@@@STEP_LOG_LINE@python.inline@@@@",
+      "@@@STEP_LOG_LINE@python.inline@import os@@@",
+      "@@@STEP_LOG_LINE@python.inline@import subprocess@@@",
+      "@@@STEP_LOG_LINE@python.inline@import sys@@@",
+      "@@@STEP_LOG_LINE@python.inline@out = sys.argv[1]@@@",
+      "@@@STEP_LOG_LINE@python.inline@log = subprocess.check_output(['adb', 'logcat', '-d'])@@@",
+      "@@@STEP_LOG_LINE@python.inline@for line in log.split('\\n'):@@@",
+      "@@@STEP_LOG_LINE@python.inline@  tokens = line.split()@@@",
+      "@@@STEP_LOG_LINE@python.inline@  if len(tokens) == 11 and tokens[-7] == 'F' and tokens[-3] == 'pc':@@@",
+      "@@@STEP_LOG_LINE@python.inline@    addr, path = tokens[-2:]@@@",
+      "@@@STEP_LOG_LINE@python.inline@    local = os.path.join(out, os.path.basename(path))@@@",
+      "@@@STEP_LOG_LINE@python.inline@    if os.path.exists(local):@@@",
+      "@@@STEP_LOG_LINE@python.inline@      sym = subprocess.check_output(['addr2line', '-Cfpe', local, addr])@@@",
+      "@@@STEP_LOG_LINE@python.inline@      line = line.replace(addr, addr + ' ' + sym.strip())@@@",
+      "@@@STEP_LOG_LINE@python.inline@  print line@@@",
+      "@@@STEP_LOG_END@python.inline@@@"
+    ]
   },
   {
     "cmd": [
       "adb",
       "reboot"
     ],
     "cwd": "[SLAVE_BUILD]/skia",
     "name": "reboot"
   },
   {
     "cmd": [
       "adb",
       "kill-server"
     ],
     "cwd": "[SLAVE_BUILD]/skia",
     "name": "kill adb server"
   },
   {
     "name": "$result",
     "recipe_result": null,
     "status_code": 0
   }
 ]