Rollback r41807.

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 18dd254abb776c01935ce94e29da84012107dc92..62c2d0b8d001b83e82fe88aa54d5f299cd36f8ca 100644
--- a/pkg/analyzer/lib/src/generated/engine.dart
+++ b/pkg/analyzer/lib/src/generated/engine.dart
@@ -1713,16 +1713,22 @@ class AnalysisContextImpl implements InternalAnalysisContext {
   Element getElement(ElementLocation location) {
     // TODO(brianwilkerson) This should not be a "get" method.
     try {
-      if (location is DartElementLocation) {
-        String libSourceEncoding = location.librarySourceEncoding;
-        Source libSource = _computeSourceFromEncoding(libSourceEncoding);
-        LibraryElementImpl libElement = computeLibraryElement(libSource);
-        return libElement.getChildElement(
-            location.unitSourceEncoding,
-            location.nameOffset,
-            location.kind);
-      }
-      // TODO(scheglov) add HtmlElementLocation
+      List<String> components = location.components;
+      Source source = _computeSourceFromEncoding(components[0]);
+      String sourceName = source.shortName;
+      if (AnalysisEngine.isDartFileName(sourceName)) {
+        ElementImpl element = computeLibraryElement(source) as ElementImpl;
+        for (int i = 1; i < components.length; i++) {
+          if (element == null) {
+            return null;
+          }
+          element = element.getChild(components[i]);
+        }
+        return element;
+      }
+      if (AnalysisEngine.isHtmlFileName(sourceName)) {
+        return computeHtmlElement(source);
+      }
     } on AnalysisException catch (exception) {
     }
     return null;