Add 'sdkPath' to AnalysisContextCollection constructor..

Bug: https://github.com/pq/surveyor/issues/29
Change-Id: Ic6cc28e8e33be50b0cab35ad0f2e236bae04de0b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/194324
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Phil Quitslund <pquitslund@google.com>

pkg/analyzer/CHANGELOG.md

@@ -1,6 +1,7 @@
 ## 1.4.0-dev
 * Deprecated `TypeProvider.nonSubtypableClasses`.
   Use `TypeProvider.isNonSubtypableClass` instead.
+* Added `sdkPath` to `AnalysisContextCollection` constructor.
 
 ## 1.3.0
 * Added `Expression.inConstantContext` to API.

pkg/analyzer/lib/dart/analysis/analysis_context_collection.dart

@@ -17,10 +17,15 @@ abstract class AnalysisContextCollection {
   ///
   /// If a [resourceProvider] is given, then it will be used to access the file
   /// system, otherwise the default resource provider will be used.
-  factory AnalysisContextCollection(
-      {required List<String> includedPaths,
-      List<String>? excludedPaths,
-      ResourceProvider? resourceProvider}) = AnalysisContextCollectionImpl;
+  ///
+  /// If [sdkPath] is given, then Dart SDK at this path will be used, otherwise
+  /// the default Dart SDK will be used.
+  factory AnalysisContextCollection({
+    required List<String> includedPaths,
+    List<String>? excludedPaths,
+    ResourceProvider? resourceProvider,
+    String? sdkPath,
+  }) = AnalysisContextCollectionImpl;
 
   /// Return all of the analysis contexts in this collection.
   List<AnalysisContext> get contexts;