Reland "bot_update: Patch on gclient by default."

This is a reland of 355b11a31f

Original change's description:
> bot_update: Patch on gclient by default.
> 
> See [4] for the design doc for this change.
> 
> We're moving the patching logic from bot_update to gclient.
> This way we can test patches of dependencies that modify their DEPS
> files as well, for example when ANGLE uploads a patch that modifies
> DEPS files to be tested by a Chromium trybot.
> 
> Chromium Linux CQ and Angle trybots are already running this way
> (see [1] and [2]) and a PSA has already been sent [3]
> 
> [1] https://chromium.googlesource.com/chromium/src/+/master/infra/config/global/cr-buildbucket.cfg#214
> [2] https://chromium.googlesource.com/angle/angle/+/infra/config/cr-buildbucket.cfg#105
> [3] https://groups.google.com/a/google.com/forum/#!topic/chrome-infra/FVHN2kdUX4I
> [4] https://docs.google.com/document/d/1GSTw4ysm5AYjNR6vMA7NJUxLK2VN9IpOEp_v0u-wyOE/edit?ts=5ad78165#
> 
> Bug: 643346
> Change-Id: Ic9a9dcfae86aca730d35fbb26c26b21135e05bf3
> Recipe-Nontrivial-Roll: skia
> Recipe-Nontrivial-Roll: infra
> Recipe-Nontrivial-Roll: build_limited_scripts_slave
> Recipe-Nontrivial-Roll: skiabuildbot
> Recipe-Nontrivial-Roll: build
> Recipe-Nontrivial-Roll: release_scripts
> Reviewed-on: https://chromium-review.googlesource.com/1014356
> Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
> Reviewed-by: Aaron Gable <agable@chromium.org>

Bug: 643346
Change-Id: I2da17456f24d1e9fcc3f48f9242b4db05cadbf6d
Reviewed-on: https://chromium-review.googlesource.com/1029073
Reviewed-by: Andrii Shyshkalov <tandrii@chromium.org>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>

recipes/recipe_modules/bot_update/api.py

@@ -15,7 +15,7 @@ class BotUpdateApi(recipe_api.RecipeApi):
                patch_gerrit_url, revision, parent_got_revision,
                deps_revision_overrides, fail_patch, *args, **kwargs):
     self._apply_patch_on_gclient = properties.get(
-        'apply_patch_on_gclient', False)
+        'apply_patch_on_gclient', True)
     self._issue = patch_issue
     self._patchset = patch_set
     self._repository = repository or patch_repository_url
@@ -207,8 +207,8 @@ class BotUpdateApi(recipe_api.RecipeApi):
       cmd.append('--gerrit_no_rebase_patch_ref')
     if disable_syntax_validation or cfg.disable_syntax_validation:
       cmd.append('--disable-syntax-validation')
-    if self._apply_patch_on_gclient:
-      cmd.append('--apply-patch-on-gclient')
+    if not self._apply_patch_on_gclient:
+      cmd.append('--no-apply-patch-on-gclient')
 
     # Inject Json output for testing.
     first_sln = cfg.solutions[0].name

recipes/recipe_modules/bot_update/examples/full.expected/no_apply_patch_on_gclient.json

@@ -69,7 +69,7 @@
       "--revision",
       "src/third_party/angle@HEAD",
       "--disable-syntax-validation",
-      "--apply-patch-on-gclient"
+      "--no-apply-patch-on-gclient"
     ],
     "env_prefixes": {
       "PATH": [
@@ -170,7 +170,7 @@
       "src@f27fede2220bcd326aee3e86ddfd4ebd0fe58cb9",
       "--revision",
       "src/third_party/angle@fac9503c46405f77757b9a728eb85b8d7bc6080c",
-      "--apply-patch-on-gclient"
+      "--no-apply-patch-on-gclient"
     ],
     "env_prefixes": {
       "PATH": [

recipes/recipe_modules/bot_update/examples/full.py

@@ -193,12 +193,12 @@ def GenTests(api):
       patch_issue=338811,
       patch_set=3,
   )
-  yield api.test('apply_patch_on_gclient') + api.properties.tryserver(
+  yield api.test('no_apply_patch_on_gclient') + api.properties.tryserver(
       gerrit_project='angle/angle',
       patch_issue=338811,
       patch_set=3,
   ) + api.bot_update.properties(
-      apply_patch_on_gclient=True,
+      apply_patch_on_gclient=False,
   )
   yield api.test('tryjob_gerrit_v8') + api.properties.tryserver(
       gerrit_project='v8/v8',

recipes/recipe_modules/bot_update/resources/bot_update.py

@@ -1028,7 +1028,9 @@ def parse_args():
   parse.add_option(
       '--disable-syntax-validation', action='store_true',
       help='Disable validation of .gclient and DEPS syntax.')
-  parse.add_option('--apply-patch-on-gclient', action='store_true',
+  parse.add_option('--no-apply-patch-on-gclient',
+                   dest='apply_patch_on_gclient', action='store_false',
+                   default=True,
                    help='Patch the gerrit ref in gclient instead of here.')
 
   options, args = parse.parse_args()