[Android] Add context manager to record logcat during step(s).

scripts/slave/recipes/chromium.expected/amp_split_recipe_instrumentation_trigger_failure.json

Index: scripts/slave/recipes/chromium.expected/amp_split_recipe_instrumentation_trigger_failure.json
diff --git a/scripts/slave/recipes/chromium.expected/amp_split_recipe_instrumentation_trigger_failure.json b/scripts/slave/recipes/chromium.expected/amp_split_recipe_instrumentation_trigger_failure.json
index 5efcd8d5c3fff3014c4deec195e92be0e2955b86..e29a206a6dfd2e6177c3b100b50b3ea498e1c295 100644
--- a/scripts/slave/recipes/chromium.expected/amp_split_recipe_instrumentation_trigger_failure.json
+++ b/scripts/slave/recipes/chromium.expected/amp_split_recipe_instrumentation_trigger_failure.json
@@ -515,6 +515,27 @@
     ]
   },
   {
+    "cmd": [],
+    "cwd": "[SLAVE_BUILD]",
+    "name": "AndroidWebViewTest"
+  },
+  {
+    "cmd": [
+      "[BUILD]/scripts/slave/daemonizer.py",
+      "--",
+      "[SLAVE_BUILD]/src/build/android/adb_logcat_monitor.py",
+      "[TMP_BASE]/test_logcat_tmp_1"
+    ],
+    "cwd": "[SLAVE_BUILD]",
+    "env": {
+      "PATH": "[SLAVE_BUILD]/src/third_party/android_tools/sdk/platform-tools:[SLAVE_BUILD]/src/build/android:%(PATH)s"
+    },
+    "name": "AndroidWebViewTest.spawn_logcat_monitor",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
     "cmd": [
       "[SLAVE_BUILD]/src/build/android/adb_install_apk.py",
       "[SLAVE_BUILD]/src/out/Release/apks/AndroidWebView",
@@ -527,7 +548,10 @@
     "env": {
       "PATH": "[SLAVE_BUILD]/src/third_party/android_tools/sdk/platform-tools:[SLAVE_BUILD]/src/build/android:%(PATH)s"
     },
-    "name": "install AndroidWebView"
+    "name": "AndroidWebViewTest.install AndroidWebView",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
   },
   {
     "cmd": [
@@ -551,9 +575,25 @@
       "/path/to/tmp/json"
     ],
     "cwd": "[SLAVE_BUILD]",
-    "name": "Instrumentation test AndroidWebViewTest",
+    "name": "AndroidWebViewTest.Instrumentation test AndroidWebViewTest",
+    "~followup_annotations": [
+      "@@@STEP_NEST_LEVEL@1@@@"
+    ]
+  },
+  {
+    "cmd": [
+      "python",
+      "-u",
+      "[BUILD]/scripts/slave/tee.py",
+      "/path/to/tmp/logcat",
+      "--",
+      "[SLAVE_BUILD]/src/build/android/adb_logcat_printer.py",
+      "[TMP_BASE]/test_logcat_tmp_1"
+    ],
+    "cwd": "[SLAVE_BUILD]",
+    "name": "AndroidWebViewTest.logcat_dump",
     "~followup_annotations": [
-      "@@@STEP_TEXT@<br/>failures:<br/>TestB<br/>@@@"
+      "@@@STEP_NEST_LEVEL@1@@@"
     ]
   },
   {