Use .flutter-plugins-dependencies for crash reporting. (#169319)

Closes https://github.com/flutter/flutter/issues/169318.

packages/flutter_tools/lib/src/reporting/github_template.dart

@@ -143,26 +143,62 @@ ${_projectMetadataInformation()}
             ..writeln('**Creation channel**: ${metadata.versionChannel}')
             ..writeln('**Creation framework version**: ${metadata.versionRevision}');
 
-      final File file = project.flutterPluginsFile;
+      final File file = project.flutterPluginsDependenciesFile;
       if (file.existsSync()) {
-        description.writeln('### Plugins');
+        _writePlugins(description, file);
-        // Format is:
-        // camera=/path/to/.pub-cache/hosted/pub.dartlang.org/camera-0.5.7+2/
-        for (final String plugin in project.flutterPluginsFile.readAsLinesSync()) {
-          final List<String> pluginParts = plugin.split('=');
-          if (pluginParts.length != 2) {
-            continue;
-          }
-          // Write the last part of the path, which includes the plugin name and version.
-          // Example: camera-0.5.7+2
-          final List<String> pathParts = _fileSystem.path.split(pluginParts[1]);
-          description.writeln(pathParts.isEmpty ? pluginParts.first : pathParts.last);
-        }
       }
-
       return description.toString();
     } on Exception catch (exception) {
       return exception.toString();
     }
   }
+
+  void _writePlugins(StringBuffer description, File file) {
+    description.writeln('### Plugins');
+    // Format is:
+    // {
+    //   "plugins": {
+    //     "ios": [
+    //       {
+    //         "path": "/path/to/.pub-cache/hosted/pub.dartlang.org/camera-0.5.7+2/",
+    //       }
+    //     ]
+    //   }
+    // }
+    final Object? json = jsonDecode(file.readAsStringSync());
+    if (json is! Map<String, Object?>) {
+      return;
+    }
+    final Object? plugins = json['plugins'];
+    if (plugins is! Map<String, Object?>) {
+      return;
+    }
+    final Set<String> pluginPaths = <String>{};
+    for (final Object? pluginList in plugins.values) {
+      if (pluginList is! List<Object?>) {
+        continue;
+      }
+      for (final Object? plugin in pluginList) {
+        if (plugin is! Map<String, Object?>) {
+          continue;
+        }
+        final String? path = plugin['path'] as String?;
+        if (path != null) {
+          pluginPaths.add(path);
+        }
+      }
+    }
+    if (pluginPaths.isEmpty) {
+      return;
+    }
+    for (final String path in pluginPaths) {
+      // Write the last part of the path, which includes the plugin name and version.
+      // Example: camera-0.5.7+2
+      final List<String> pathParts = _fileSystem.path.split(path);
+      if (pathParts.isEmpty) {
+        continue;
+      }
+      description.writeln(pathParts.last);
+    }
+  }
 }

packages/flutter_tools/test/general.shard/github_template_test.dart

@@ -13,6 +13,33 @@ import 'package:flutter_tools/src/reporting/github_template.dart';
 import '../src/common.dart';
 import '../src/context.dart';
 
+const String _kPluginsFile = '''
+{
+  "plugins": {
+    "ios": [
+      {
+        "name": "camera",
+        "path": "/fake/pub.dartlang.org/camera-0.5.7+2/"
+      },
+      {
+        "name": "device_info",
+        "path": "/fake/pub.dartlang.org/device_info-0.4.1+4/"
+      }
+    ],
+    "android": [
+      {
+        "name": "camera",
+        "path": "/fake/pub.dartlang.org/camera-0.5.7+2/"
+      },
+      {
+        "name": "device_info",
+        "path": "/fake/pub.dartlang.org/device_info-0.4.1+4/"
+      }
+    ]
+  }
+}
+''';
+
 void main() {
   late BufferLogger logger;
   late FileSystem fs;
@@ -199,11 +226,8 @@ flutter:
     iosBundleIdentifier: com.example.failing.ios
 ''');
 
-          final File pluginsFile = projectDirectory.childFile('.flutter-plugins');
+          final File pluginsFile = projectDirectory.childFile('.flutter-plugins-dependencies');
-          pluginsFile.writeAsStringSync('''
+          pluginsFile.writeAsStringSync(_kPluginsFile);
-camera=/fake/pub.dartlang.org/camera-0.5.7+2/
-device_info=/fake/pub.dartlang.org/pub.dartlang.org/device_info-0.4.1+4/
-        ''');
 
           final File metadataFile = projectDirectory.childFile('.metadata');
           metadataFile.writeAsStringSync('''