Make JavaScriptBackend.processAnnotations element-model agnostic

pkg/compiler/lib/src/inferrer/inferrer_engine.dart

Index: pkg/compiler/lib/src/inferrer/inferrer_engine.dart
diff --git a/pkg/compiler/lib/src/inferrer/inferrer_engine.dart b/pkg/compiler/lib/src/inferrer/inferrer_engine.dart
index 152f2f4e23d29d89175aa71889a9d1eb3ecec486..c281e178e0a85760ef6b5b2e68c5826c4211d776 100644
--- a/pkg/compiler/lib/src/inferrer/inferrer_engine.dart
+++ b/pkg/compiler/lib/src/inferrer/inferrer_engine.dart
@@ -85,6 +85,17 @@ class InferrerEngine {
 
   CommonElements get commonElements => closedWorld.commonElements;
 
+  /// Returns `true` if [element] has an `@AssumeDynamic()` annotation.
+  bool assumeDynamic(Element element) {
+    return element is MemberElement && annotations.assumeDynamic(element);

[Siggi Cherem (dart-lang), 2017/05/02 20:04:22]

nit: let's rename annotations too (optimizerHints?)

[Johnni Winther, 2017/05/03 08:05:59]

Done.

+  }
+
+  /// Returns `true` if [element] has an `@TrustTypeAnnotations()` annotation.
+  bool trustTypeAnnotations(Element element) {
+    return element is MemberElement &&
+        annotations.trustTypeAnnotations(element);
+  }
+
   /**
    * Applies [f] to all elements in the universe that match
    * [selector] and [mask]. If [f] returns false, aborts the iteration.