[Android] Turn down gn-specific Android bots.

scripts/slave/recipe_modules/chromium_tests/chromium_recipe.md

 # Chromium Recipes: Reference Doc
 
 [TOC]
 
 ## I just want to....
 
 This section covers common tasks for chromium developers. If you want a more
 full background on the chromium recipes, go to the [Background](#Background)
 section.
 
@@ skipping 49 matching lines @@
 
 ### Create a New Trybot
 
 Every new main waterfall bot *must* have corresponding trybot coverage. In
 addition, you can request a new trybot if you have a configuration you are
 interested in testing.
 
 `chromium` recipe trybots currently are configured by specifying the main
 waterfall configuration they are supposed to emulate. This information is stored
 in the [`chromium_tests/trybots.py`](https://chromium.googlesource.com/chromium/tools/build.git/+/master/scripts/slave/recipe_modules/chromium_tests/trybots.py)
-file. So, for example, the `android_chromium_gn_compile_rel` trybot is
+file. So, for example, the `linux_android_rel_ng` trybot is
 configured as follows:
 
       ...
-      'android_chromium_gn_compile_rel': {
+      'linux_android_rel_ng': {
         'mastername': 'chromium.linux',
-        'buildername': 'Android GN',
-        'analyze_mode': 'compile',
+        'buildername': 'Android Builder',
+        'tester': 'Android Tests',
       },
       ...
 
 For example, suppose we want to add a builder named `new_fancy_android_device`
 to `tryserver.chromium.android`, which is a copy of the builder named
 `fancy_android_device` on the main `chromium.android` waterfall.
 We would do the following
 
 1. Add the builder configuration of
 
@@ skipping 254 matching lines @@
 Path: [build/scripts/slave/recipe_modules/chromium_tests/api.py](https://code.google.com/p/chromium/codesearch#chromium/build/scripts/slave/recipe_modules/chromium/api.py)
 
 Implements methods like `configure_build`, `prepare_checkout`, compile, etc.
 that take configuration parameters and actually run the steps.
 
 ### src/testing/buildbot/*.json: per-master configs: targets & tests
 
 Example config: [src/testing/buildbot/chromium.mac.json](https://code.google.com/p/chromium/codesearch#chromium/src/testing/buildbot/chromium.mac.json&sq=package:chromium)
 
 These configs live in the project repo, and define additional compile targets and specific tests to run on each builder.