Run `dcm check-unused-code` on `devtools_app_shared` (#9934) * Run `dcm check-unused-code` on devtools_app_shared * Resolve analysis options issues

diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index d5f3f2e..8d969d4 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml

@@ -86,7 +86,7 @@
       - name: Run dcm checks on packages
         # TODO(https://github.com/flutter/devtools/issues/9906): run on all DevTools packages.
         run: |
-          dcm check-unused-code packages/devtools_app packages/devtools_extensions packages/devtools_shared --exclude-public-api
+          dcm check-unused-code packages/devtools_app packages/devtools_app_shared packages/devtools_extensions packages/devtools_shared --exclude-public-api
 
   test-packages:
     name: ${{ matrix.os }} ${{ matrix.package }} test

diff --git a/analysis_options.yaml b/analysis_options.yaml
index a50ef32..6d5d565 100644
--- a/analysis_options.yaml
+++ b/analysis_options.yaml

@@ -18,13 +18,18 @@
     - '**/build/**'
     - '**.freezed.dart'
     - tool/flutter-sdk/
-    - build/**
-    - android/**
-    - ios/**
-    - web/**
-    - windows/**
-    - macos/**
-    - linux/**
+    - '**/lib/generated_plugin_registrant.dart'
+    - '**/android/**'
+    - '**/ios/**'
+    - '**/web/**'
+    - '**/windows/**'
+    - '**/macos/**'
+    - '**/linux/**'
+    # Syntax highlighting test files may include or lint-violating code
+    # for testing so should be ignored. Uncomment this while modifying
+    # these files if you want to ensure code is not invalid except where
+    # expected.
+    - packages/devtools_app/test/test_infra/test_data/syntax_highlighting/**
 
 linter:
   rules:
@@ -156,22 +161,21 @@
     - valid_regexps
     # - void_checks # not yet tested
 
-dart_code_metrics:
+dcm:
   metrics:
     cyclomatic-complexity: 20
     number-of-parameters: 4
     maximum-nesting-level: 5
   metrics-exclude:
-    - test/**
+    - packages/devtools_app/test/test_infra/test_data/**
   exclude:
     unused-code:
-      # TODO(https://github.com/dart-lang/sdk/issues/63864): clean up these
-      # paths once this issue is fixed. These paths are currently relative to
-      # devtools_app/.
       # TODO(https://github.com/flutter/devtools/issues/9906) remove these
       # excludes as findings are resolved.
       # This fixture has unused code for testing the debugger.
-      - test/test_infra/fixtures/flutter_app/**
+      - packages/devtools_app/test/test_infra/fixtures/**
+      # Ignore unused code in package examples.
+      - packages/devtools_app_shared/example/**
   rules:
 #    - arguments-ordering Too strict
 #    - avoid-banned-imports # TODO(polina-c): add configuration

diff --git a/flutter-candidate.txt b/flutter-candidate.txt
index f094eb2..22deb79 100644
--- a/flutter-candidate.txt
+++ b/flutter-candidate.txt

@@ -1 +1 @@
-0f0246377b1c9d8bc365a439c520a7de6c3f590b
+d0da4767346ae787dc60168c8581e3e57ecda6b5

diff --git a/packages/devtools_app/analysis_options.yaml b/packages/devtools_app/analysis_options.yaml
deleted file mode 100644
index 1fb0989..0000000
--- a/packages/devtools_app/analysis_options.yaml
+++ /dev/null

@@ -1,26 +0,0 @@
-# Copyright 2025 The Flutter Authors
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file or at https://developers.google.com/open-source/licenses/bsd.
-include: ../../analysis_options.yaml
-
-analyzer:
-  exclude:
-    - build/**
-    - lib/generated_plugin_registrant.dart
-    - macos/
-    # Syntax highlighting test files may include or lint-violating code
-    # for testing so should be ignored. Uncomment this while modifying
-    # these files if you want to ensure code is not invalid except where
-    # expected.
-    - test/test_infra/test_data/syntax_highlighting/**
-    - android/**
-    - ios/**
-    - web/**
-    - windows/**
-    - macos/**
-    - linux/**
-
-dart_code_metrics:
-  metrics-exclude:
-    - test/**
-    - test/test_infra/test_data/**

diff --git a/packages/devtools_app_shared/lib/src/ui/theme/_ide_theme_web.dart b/packages/devtools_app_shared/lib/src/ui/theme/_ide_theme_web.dart
index 4b55e70..993e9b7 100644
--- a/packages/devtools_app_shared/lib/src/ui/theme/_ide_theme_web.dart
+++ b/packages/devtools_app_shared/lib/src/ui/theme/_ide_theme_web.dart

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file or at https://developers.google.com/open-source/licenses/bsd.
 
+// ignore_for_file: unused-code, this file is exported via config specific exports.
+
 import 'package:web/web.dart';
 
 import '../../utils/url/url.dart';

diff --git a/packages/devtools_app_shared/lib/src/utils/url/_url_web.dart b/packages/devtools_app_shared/lib/src/utils/url/_url_web.dart
index 4e81763..5fa1766 100644
--- a/packages/devtools_app_shared/lib/src/utils/url/_url_web.dart
+++ b/packages/devtools_app_shared/lib/src/utils/url/_url_web.dart

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file or at https://developers.google.com/open-source/licenses/bsd.
 
+// ignore_for_file: unused-code, this file is exported via config specific exports.
+
 import 'package:web/web.dart';
 
 Map<String, String> loadQueryParams({String Function(String)? urlModifier}) {