Update git submodules

* Update plugins/delete-project from branch 'stable-3.1'
  to 4ffca21d1a581b61a1ff94acacb9249089b573b8
  - Merge branch 'stable-3.0' into stable-3.1
    
    * stable-3.0:
      Fix so that GWTUI js file is not executed under PolyGerrit
      DeleteProjectIT: Check that project gets unwatched after deletion
      DeleteProjectIT: Assert that after forced delete reindexing happened
      DeleteProjectIT: Add ssh delete watched project test similar to http
      Fix reindex after project deletion
      Upgrade bazlets to latest stable-2.16 to build with 2.16.13 API
      Upgrade bazlets to latest stable-2.16
      Upgrade bazlets to latest stable-2.15 to build with 2.15.18 API
      Upgrade bazlets to latest stable-2.15
      Upgrade bazlets to latest stable-2.14
      Bazel: Migrate workspace status script to python
      Upgrade bazlets to latest stable-2.16
      Upgrade bazlets to latest stable-2.15
      Upgrade bazlets to latest stable-2.14
      Bump Bazel version to 1.1.0
      build.md: Correct in-tree test command
      Replace bazel-genfiles with bazel-bin in documentation
    
    Adjust DeleteProjectIT and DatabaseDeleteHandler to API changes.
    
    Change-Id: I7dd082b728fa7a98b225c10ef6d2ecf11e7daa09
    
  - Merge branch 'stable-2.16' into stable-3.0
    
    * stable-2.16:
      Fix so that GWTUI js file is not executed under PolyGerrit
    
    Change-Id: I9b5e59bb31cc7de07cf863af7baebe556e8f494f
    
  - Merge "Fix so that GWTUI js file is not executed under PolyGerrit" into stable-2.16
  - Merge branch 'stable-2.16' into stable-3.0
    
    * stable-2.16:
      DeleteProjectIT: Check that project gets unwatched after deletion
      DeleteProjectIT: Assert that after forced delete reindexing happened
      DeleteProjectIT: Add ssh delete watched project test similar to http
      Fix reindex after project deletion
      Upgrade bazlets to latest stable-2.16 to build with 2.16.13 API
      Upgrade bazlets to latest stable-2.16
      Upgrade bazlets to latest stable-2.15 to build with 2.15.18 API
      Upgrade bazlets to latest stable-2.15
      Upgrade bazlets to latest stable-2.14
      Bazel: Migrate workspace status script to python
      Upgrade bazlets to latest stable-2.16
      Upgrade bazlets to latest stable-2.15
      Upgrade bazlets to latest stable-2.14
      Bump Bazel version to 1.1.0
      build.md: Correct in-tree test command
      Replace bazel-genfiles with bazel-bin in documentation
    
    Change-Id: Ic060483ccb190c7f31c3bb13eeb15d230c3378b1
    
  - Merge branch 'stable-2.15' into stable-2.16
    
    * stable-2.15:
      DeleteProjectIT: Check that project gets unwatched after deletion
      DeleteProjectIT: Assert that after forced delete reindexing happened
      DeleteProjectIT: Add ssh delete watched project test similar to http
      Fix reindex after project deletion
    
    Change-Id: I29fca09892a5a6878547c5d0bbd2966310d986a3
    
  - Merge changes Iaf1826ab,I02632cb6,I5ca2ec2b,I6578e664 into stable-2.15
    
    * changes:
      DeleteProjectIT: Check that project gets unwatched after deletion
      DeleteProjectIT: Assert that after forced delete reindexing happened
      DeleteProjectIT: Add ssh delete watched project test similar to http
      Fix reindex after project deletion
    
  - Fix so that GWTUI js file is not executed under PolyGerrit
    
    When using PolyGerrit, it appears that it loads GWTUI specific
    delete-project js files. It dosen't appear to inject "window.Polymer"
    into it thus will always equal undefined or false.
    
    To fix this we look for the GERRIT_UI cookie which if the user is using
    GWTUI, will have this set.
    
    Change-Id: I2512fe18108799f3a73b00ada8a756eb6e397879
    
  - DeleteProjectIT: Check that project gets unwatched after deletion
    
    Change-Id: Iaf1826ab98280aa042304b30d873575c71bdac60
    
  - DeleteProjectIT: Assert that after forced delete reindexing happened
    
    Unit tests didn't check whether reindexing happened after deletion or
    not. In NoteDb case even after git repo got deleted changes were still
    present in the index, so querying on a deleted project name returned
    change information.
    
    Bug: Issue 11650
    Change-Id: I02632cb6195e262478850e5ec589d01aab4a9ef3
    
  - DeleteProjectIT: Add ssh delete watched project test similar to http
    
    Change-Id: I5ca2ec2b7df92a8fc24135c4d94efe00ab4d761e
    
  - Fix reindex after project deletion
    
    Make plugin to properly support NoteDb.
    
    DatabaseDeleteHandler:
    - Check if ReviewDb is enabled from inside DatabaseHandler.
    - Add functionality for deleteChanges to check whether ReviewDb is
      enabled, since NoteDb behaves differently compared to ReviewDb.
    
    Bug: Issue 11650
    Change-Id: I6578e6649e9fe0d8c139243cdade8c86e1b6c0ed
    
  - Upgrade bazlets to latest stable-2.16 to build with 2.16.13 API
    
    Change-Id: Ib378315a93969b1de605e2d9cc8b2758f37920e4
    
  - Upgrade bazlets to latest stable-2.16
    
    download_file.py: Fix root workspace directory detection
    
    Change-Id: I26017fc180b761feba2b5f01d4eb7a0e7c7b690c
    
  - Merge branch 'stable-2.15' into stable-2.16
    
    * stable-2.15:
      Upgrade bazlets to latest stable-2.15 to build with 2.15.18 API
      Upgrade bazlets to latest stable-2.15
      Upgrade bazlets to latest stable-2.14
      Bazel: Migrate workspace status script to python
    
    Change-Id: Ib8b9c5efc04f2b2f983c091bf96c4eafeca510ec
    
  - Upgrade bazlets to latest stable-2.15 to build with 2.15.18 API
    
    Change-Id: Icf85a0b3340f2bfe58b3b21ec57a2640cf8a1ba4
    
  - Merge branch 'stable-2.14' into stable-2.15
    
    * stable-2.14:
      Upgrade bazlets to latest stable-2.14
      Bazel: Migrate workspace status script to python
    
    Change-Id: I9ff2983f304b3cfa04ef88401f09d33c5746595f
    
  - Upgrade bazlets to latest stable-2.15
    
    download_file.py: Fix root workspace directory detection
    
    Change-Id: I1c5eb23dfe5978270c10ef6d2baaed7ecd0a04fc
    
  - Upgrade bazlets to latest stable-2.14
    
    download_file.py: Fix root workspace directory detection
    
    Change-Id: Id2da57a98ab0344dc9942d9ff0338309494b0f48
    
  - Bazel: Migrate workspace status script to python
    
    Migrate tools/workspace-status.sh script to Python to ensure better
    compatibility with other operating systems, as suggested in: [1].
    
    [1] https://github.com/bazelbuild/bazel/issues/5958
    
    Change-Id: I20ec325d610353309a40fc85132382004bc61bd0
    
  - Upgrade bazlets to latest stable-2.16
    
    Fix genrule2 to clean up temporary folder content
    
    Change-Id: I1d186a2082b364f7acc2d99c20ec0211efebbfd2
    
  - Merge branch 'stable-2.15' into stable-2.16
    
    * stable-2.15:
      Upgrade bazlets to latest stable-2.15
      Upgrade bazlets to latest stable-2.14
      Bump Bazel version to 1.1.0
    
    Change-Id: Ie6b12736c2b07752cf91908764bf828a83694c6c
    
  - Upgrade bazlets to latest stable-2.15
    
    Fix genrule2 to clean up temporary folder content
    
    Change-Id: I1d186a2082b364f7acc2d99c20ec0211efebbfd2
    
  - Merge branch 'stable-2.14' into stable-2.15
    
    * stable-2.14:
      Upgrade bazlets to latest stable-2.14
    
    Change-Id: I53bd20467b8c6268a102acc75badcaf7290ce720
    
  - Upgrade bazlets to latest stable-2.14
    
    Fix genrule2 to clean up temporary folder content
    
    Change-Id: I1d186a2082b364f7acc2d99c20ec0211efebbfd2
    
  - Merge branch 'stable-2.14' into stable-2.15
    
    * stable-2.14:
      Bump Bazel version to 1.1.0
    
    Change-Id: Ia7d244ec3ec3ae0078cb8b766bef95b3c9be922a
    
  - Bump Bazel version to 1.1.0
    
    Change-Id: I4e4c2a3c6f1b73e913fd6eda7e53f30fd8a20985
    
  - Merge branch 'stable-2.15' into stable-2.16
    
    * stable-2.15:
      build.md: Correct in-tree test command
    
    Change-Id: Iea24800c7100e6c0ab405158a3573eceb0f3957e
    
  - build.md: Correct in-tree test command
    
    Change-Id: Iff17be4a87b058eeabc30faf774c04e26f9d51ea
    
  - Merge branch 'stable-2.15' into stable-2.16
    
    * stable-2.15:
      Replace bazel-genfiles with bazel-bin in documentation
    
    Change-Id: I1496826af979861ef9391d113430379535a152e4
    
  - Merge branch 'stable-2.14' into stable-2.15
    
    * stable-2.14:
      Replace bazel-genfiles with bazel-bin in documentation
    
    Change-Id: I70ea61357ec662fa2e18325a437185d27bcd4f3d
    
  - Replace bazel-genfiles with bazel-bin in documentation
    
    Bug: Issue 11757
    Change-Id: I0c901f84e0c4c07a4ae913eab4f71e1f6167dab5
    
diff --git a/plugins/delete-project b/plugins/delete-project
index 881e409..4ffca21 160000
--- a/plugins/delete-project
+++ b/plugins/delete-project
@@ -1 +1 @@
-Subproject commit 881e409080a7a257175e736b952ab78dab51be9d
+Subproject commit 4ffca21d1a581b61a1ff94acacb9249089b573b8