Issue 5052. Analyzer should treat assert as a keyword

compiler/java/com/google/dart/compiler/DartCompiler.java

Index: compiler/java/com/google/dart/compiler/DartCompiler.java
diff --git a/compiler/java/com/google/dart/compiler/DartCompiler.java b/compiler/java/com/google/dart/compiler/DartCompiler.java
index 30577f69bec0a31dc6afa3a86b9b9f56a5042deb..c82938fb05f9381b3181bfc6882fe9101bf7abc8 100644
--- a/compiler/java/com/google/dart/compiler/DartCompiler.java
+++ b/compiler/java/com/google/dart/compiler/DartCompiler.java
@@ -858,11 +858,6 @@ public class DartCompiler {
         } finally {
           Closeables.close(r, failed);
         }
-        
-        // auto-magically define function to use instead of "assert" statement
-        if (dartSrc.getUri().toString().equals("dart://core/object.dart")) {
-          srcCode += "\nvoid " + Elements.ASSERT_FUNCTION_NAME + "(x) {}";
-        }
 
         // inject "Type" type from 1.0 M1 specification
         // remove once it will be added into SDK