Issue 3084. Generate warning, not error, for 'Unknown.unknown'

compiler/java/com/google/dart/compiler/resolver/Resolver.java

Index: compiler/java/com/google/dart/compiler/resolver/Resolver.java
diff --git a/compiler/java/com/google/dart/compiler/resolver/Resolver.java b/compiler/java/com/google/dart/compiler/resolver/Resolver.java
index 15737738f0eb29a31b48af8307a77e1f9a3e2cca..2ee7d8fe558bc95bdd0d5378e9fed653333c512d 100644
--- a/compiler/java/com/google/dart/compiler/resolver/Resolver.java
+++ b/compiler/java/com/google/dart/compiler/resolver/Resolver.java
@@ -1066,8 +1066,9 @@ public class Resolver {
                             name, referencedElementName);
           }
         }
-        if (isStaticContextOrInitializer()) {
+        if (isStaticContextOrInitializer() && !isQualifier) {
           onError(x, ResolverErrorCode.CANNOT_BE_RESOLVED, name);
+          x.markResolutionAlreadyReportedThatTheMethodCouldNotBeFound();
         }
       } else {
         element = checkResolvedIdentifier(x, isQualifier, scope, name, element);
@@ -1211,7 +1212,7 @@ public class Resolver {
               break;
 
             case NONE:
-              onError(x.getName(), ResolverErrorCode.CANNOT_BE_RESOLVED,
+              onError(x.getName(), TypeErrorCode.CANNOT_BE_RESOLVED,
                   x.getPropertyName());
               break;
 
@@ -1256,7 +1257,7 @@ public class Resolver {
               break;
 
             case NONE:
-              onError(x.getName(), ResolverErrorCode.CANNOT_BE_RESOLVED,
+              onError(x.getName(), TypeErrorCode.CANNOT_BE_RESOLVED,
                   x.getPropertyName());
               break;