[ci] Add LUCI version of the analyze tasks (flutter#4253)

Add LUCI versions of the analyze, pathified analyze, and downgraded analayze tasks. Does not include legacy analyze (N-1 and N-2 stable Flutter versions) since there are open questions about how to structure those in LUCI.

Part of flutter#114373

Author: stuartmorgan-g

.ci.yaml

@@ -69,7 +69,7 @@ platform_properties:
         }
 
 targets:
-  ### Linux-host tasks ###
+  ### Linux-host general tasks ###
   - name: Linux repo_tools_tests
     recipe: packages/packages
     timeout: 30
@@ -79,6 +79,42 @@ targets:
       channel: master
       version_file: flutter_master.version
 
+  - name: Linux analyze master
+    bringup: true # New target
+    recipe: packages/packages
+    timeout: 30
+    properties:
+      target_file: analyze.yaml
+      channel: master
+      version_file: flutter_master.version
+
+  - name: Linux analyze stable
+    bringup: true # New target
+    recipe: packages/packages
+    timeout: 30
+    properties:
+      target_file: analyze.yaml
+      channel: stable
+      version_file: flutter_stable.version
+
+  - name: Linux analyze_downgraded master
+    bringup: true # New target
+    recipe: packages/packages
+    timeout: 30
+    properties:
+      target_file: analyze_downgraded.yaml
+      channel: master
+      version_file: flutter_master.version
+
+  - name: Linux analyze_downgraded stable
+    bringup: true # New target
+    recipe: packages/packages
+    timeout: 30
+    properties:
+      target_file: analyze_downgraded.yaml
+      channel: stable
+      version_file: flutter_stable.version
+
   ### Web tasks ###
   - name: Linux_web web_build_all_packages master
     recipe: packages/packages

.ci/scripts/analyze_repo_tools.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+# Copyright 2013 The Flutter Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+set -e
+
+cd script/tool
+dart analyze --fatal-infos

.ci/scripts/pathified_analyze.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+# Copyright 2013 The Flutter Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+set -e
+
+# Pathify the dependencies on changed packages (excluding major version
+# changes, which won't affect clients).
+./script/tool_runner.sh make-deps-path-based --target-dependencies-with-non-breaking-updates
+# This uses --run-on-dirty-packages rather than --packages-for-branch
+# since only the packages changed by 'make-deps-path-based' need to be
+# re-checked.
+dart ./script/tool/bin/flutter_plugin_tools.dart analyze --run-on-dirty-packages \
+    --log-timing --custom-analysis=script/configs/custom_analysis.yaml
+# Restore the tree to a clean state, to avoid accidental issues if
+# other script steps are added to the enclosing task.
+git checkout .

.ci/targets/analyze.yaml

@@ -0,0 +1,15 @@
+tasks:
+  - name: prepare tool
+    script: .ci/scripts/prepare_tool.sh
+  - name: analyze repo tools
+    script: .ci/scripts/analyze_repo_tools.sh
+  - name: analyze
+    script: script/tool_runner.sh
+    # DO NOT change the custom-analysis argument here without changing the Dart repo.
+    # See the comment in script/configs/custom_analysis.yaml for details.
+    args: ["analyze", "--custom-analysis=script/configs/custom_analysis.yaml"]
+    # Re-run analysis with path-based dependencies to ensure that publishing
+    # the changes won't break analysis of other packages in the respository
+    # that depend on it.
+  - name: analyze - pathified
+    script: .ci/scripts/pathified_analyze.sh

.ci/targets/analyze_downgraded.yaml

@@ -0,0 +1,10 @@
+tasks:
+  - name: prepare tool
+    script: .ci/scripts/prepare_tool.sh
+  # Does a sanity check that packages pass analysis with the lowest possible
+  # versions of all dependencies. This is to catch cases where we add use of
+  # new APIs but forget to update minimum versions of dependencies to where
+  # those APIs are introduced.
+  - name: analyze - downgraded
+    script: script/tool_runner.sh
+    args: ["analyze", "--downgrade", "--custom-analysis=script/configs/custom_analysis.yaml"]