Removes dartc reliance on its own libraries, now can be targeted at any implementation's libraries

compiler/java/com/google/dart/compiler/type/TypeAnalyzer.java

Index: compiler/java/com/google/dart/compiler/type/TypeAnalyzer.java
diff --git a/compiler/java/com/google/dart/compiler/type/TypeAnalyzer.java b/compiler/java/com/google/dart/compiler/type/TypeAnalyzer.java
index 79c1276028125ef19c6ccdd8ca701fe82b873aa8..0af9c76276a694d591808b33852c8b7f74c16e7c 100644
--- a/compiler/java/com/google/dart/compiler/type/TypeAnalyzer.java
+++ b/compiler/java/com/google/dart/compiler/type/TypeAnalyzer.java
@@ -17,6 +17,9 @@ import com.google.dart.compiler.DartCompilationError;
 import com.google.dart.compiler.DartCompilationPhase;
 import com.google.dart.compiler.DartCompilerContext;
 import com.google.dart.compiler.ErrorCode;
+import com.google.dart.compiler.ErrorSeverity;
+import com.google.dart.compiler.Source;
+import com.google.dart.compiler.SystemLibraryManager;
 import com.google.dart.compiler.ast.ASTVisitor;
 import com.google.dart.compiler.ast.DartArrayAccess;
 import com.google.dart.compiler.ast.DartArrayLiteral;
@@ -180,7 +183,8 @@ public class TypeAnalyzer implements DartCompilationPhase {
     private final InterfaceType functionType;
     private final InterfaceType dynamicIteratorType;
     private final boolean developerModeChecks;
-
+    private final boolean suppressSdkWarnings;
+    
     /**
      * Keeps track of the number of nested catches, used to detect re-throws
      * outside of any catch block.
@@ -202,6 +206,8 @@ public class TypeAnalyzer implements DartCompilationPhase {
       this.nullType = typeProvider.getNullType();
       this.functionType = typeProvider.getFunctionType();
       this.dynamicIteratorType = typeProvider.getIteratorType(dynamicType);
+      this.suppressSdkWarnings = context.getCompilerConfiguration().getCompilerOptions()
+          .suppressSdkWarnings();
     }
 
     @VisibleForTesting
@@ -218,8 +224,14 @@ public class TypeAnalyzer implements DartCompilationPhase {
       return dynamicType;
     }
 
-    private void onError(HasSourceInfo node, ErrorCode code, Object... arguments) {
-      context.onError(new DartCompilationError(node, code, arguments));
+    private void onError(HasSourceInfo node, ErrorCode errorCode, Object... arguments) {
+      Source source = node.getSourceInfo().getSource();
+      if (suppressSdkWarnings && errorCode.getErrorSeverity() == ErrorSeverity.WARNING) {
+        if (source != null && SystemLibraryManager.isDartUri(source.getUri())) {
+          return;
+        }
+      }
+      context.onError(new DartCompilationError(node, errorCode, arguments));
     }
 
     AssertionError internalError(HasSourceInfo node, String message, Object... arguments) {