Remove unused InternalAnalysisContext.addSourceInfo().

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 32410b7f1c118ab154dcd5a217245859226dec2e..316182b5feb2d6223f85708d286cacee207c0028 100644
--- a/pkg/analyzer/lib/src/generated/engine.dart
+++ b/pkg/analyzer/lib/src/generated/engine.dart
@@ -1464,14 +1464,6 @@ class AnalysisContextImpl implements InternalAnalysisContext {
   }
 
   @override
-  void addSourceInfo(Source source, SourceEntry info) {
-    // This implementation assumes that the access to the cache does not need to
-    // be synchronized because no other object can have access to this context
-    // while this method is being invoked.
-    _cache.put(source, info);
-  }
-
-  @override
   void applyAnalysisDelta(AnalysisDelta delta) {
     ChangeSet changeSet = new ChangeSet();
     delta.analysisLevels.forEach((Source source, AnalysisLevel level) {
@@ -9078,11 +9070,6 @@ abstract class InternalAnalysisContext implements AnalysisContext {
   TypeResolverVisitorFactory get typeResolverVisitorFactory;
 
   /**
-   * Add the given [source] with the given [information] to this context.
-   */
-  void addSourceInfo(Source source, SourceEntry information);
-
-  /**
    * Return a list containing the sources of the libraries that are exported by
    * the library with the given [source]. The list will be empty if the given
    * source is invalid, if the given source does not represent a library, or if