Compare variable initializers as functions, skip the return type.

pkg/analyzer/lib/src/summary/resynthesize.dart

Index: pkg/analyzer/lib/src/summary/resynthesize.dart
diff --git a/pkg/analyzer/lib/src/summary/resynthesize.dart b/pkg/analyzer/lib/src/summary/resynthesize.dart
index be97bfb0d091b1169d926c789a362dbf04581183..f333826b7a384291a422eaeeeaed76669587e4f1 100644
--- a/pkg/analyzer/lib/src/summary/resynthesize.dart
+++ b/pkg/analyzer/lib/src/summary/resynthesize.dart
@@ -1764,6 +1764,11 @@ class _LibraryResynthesizer {
     }
     FunctionElementImpl initializerElement =
         buildLocalFunction(serializedInitializer);
+    // TODO(scheglov) The flag `hasImplicitReturnType` is `true` now because we

[Paul Berry, 2016/02/18 16:40:00]

FYI, I'm about to make a change to the element model that sets
hasImplicitReturnType to true for variable initializer executable elements. 
When I make that change, I'll remove these two statements.

+    // don't serialize the return type. But once we do, the next two statements
+    // can be removed.
+    assert(initializerElement.hasImplicitReturnType == true);
+    initializerElement.hasImplicitReturnType = false;
     initializerElement.synthetic = true;
     variable.initializer = initializerElement;
   }