Changes in analyzer needed for dev_compiler

pkg/analyzer/lib/src/generated/engine.dart

Index: pkg/analyzer/lib/src/generated/engine.dart
diff --git a/pkg/analyzer/lib/src/generated/engine.dart b/pkg/analyzer/lib/src/generated/engine.dart
index ecb784d15847e29d2a365684df7bffc2df5decc2..4cd2f615d422aee0f4ea59e6192d04b6f26f706f 100644
--- a/pkg/analyzer/lib/src/generated/engine.dart
+++ b/pkg/analyzer/lib/src/generated/engine.dart
@@ -1018,6 +1018,11 @@ class AnalysisContextImpl implements InternalAnalysisContext {
   TypeResolverVisitorFactory typeResolverVisitorFactory;
 
   /**
+   * A factory to override how [LibraryResolver] is created.
+   */
+  LibraryResolverFactory libraryResolverFactory;
+
+  /**
    * Initialize a newly created analysis context.
    */
   AnalysisContextImpl() {
@@ -9031,6 +9036,11 @@ abstract class InternalAnalysisContext implements AnalysisContext {
   TypeResolverVisitorFactory get typeResolverVisitorFactory;
 
   /**
+   * A factory to override how [LibraryResolver] is created.
+   */
+  LibraryResolverFactory get libraryResolverFactory;
+
+  /**
    * Add the given [source] with the given [information] to this context.
    */
   void addSourceInfo(Source source, SourceEntry information);
@@ -10454,7 +10464,10 @@ class ResolveDartLibraryTask extends AnalysisTask {
 
   @override
   void internalPerform() {
-    _resolver = new LibraryResolver(context);
+    LibraryResolverFactory resolverFactory = context.libraryResolverFactory;
+    _resolver = resolverFactory == null
+        ? new LibraryResolver(context)
+        : resolverFactory(context);
     _resolver.resolveLibrary(librarySource, true);
   }
 }