Replace _analyzeElementEagerly with Resolution.ensureResolved

pkg/compiler/lib/src/compiler.dart

Index: pkg/compiler/lib/src/compiler.dart
diff --git a/pkg/compiler/lib/src/compiler.dart b/pkg/compiler/lib/src/compiler.dart
index bc7dfe0e3982787e6b721aac2a3806c6eb67e300..ad93a0f9026008265afa2bc8dc8cc67e87b40cd7 100644
--- a/pkg/compiler/lib/src/compiler.dart
+++ b/pkg/compiler/lib/src/compiler.dart
@@ -1847,6 +1847,14 @@ class _CompilerResolution implements Resolution {
   }
 
   @override
+  void ensureResolved(Element element) {
+    if (compiler.serialization.isDeserialized(element)) {
+      return;
+    }
+    computeWorldImpact(element);
+  }
+
+  @override
   bool hasResolvedAst(Element element) {
     assert(invariant(element, element.isDeclaration,
         message: "Element $element must be the declaration."));
@@ -1875,6 +1883,12 @@ class _CompilerResolution implements Resolution {
   }
 
   @override
+  ResolvedAst computeResolvedAst(Element element) {
+    ensureResolved(element);
+    return getResolvedAst(element);
+  }
+
+  @override
   bool hasResolutionImpact(Element element) {
     assert(invariant(element, element.isDeclaration,
         message: "Element $element must be the declaration."));