Move all flags to CompilerOptions (first step to stop passing the compiler to

pkg/compiler/lib/src/resolution/resolution.dart

Index: pkg/compiler/lib/src/resolution/resolution.dart
diff --git a/pkg/compiler/lib/src/resolution/resolution.dart b/pkg/compiler/lib/src/resolution/resolution.dart
index b0fc586dd35d659b86ca568a0d7f2b9d98e949c8..f628e839981195e2201b8f217f48b3ebd3f300a7 100644
--- a/pkg/compiler/lib/src/resolution/resolution.dart
+++ b/pkg/compiler/lib/src/resolution/resolution.dart
@@ -266,7 +266,8 @@ class ResolverTask extends CompilerTask {
             tree, MessageKind.FUNCTION_WITH_INITIALIZER);
       }
 
-      if (!compiler.analyzeSignaturesOnly || tree.isRedirectingFactory) {
+      if (!compiler.options.analyzeSignaturesOnly ||
+          tree.isRedirectingFactory) {
         // We need to analyze the redirecting factory bodies to ensure that
         // we can analyze compile-time constants.
         visitor.visit(tree.body);