Replace and remove JavaException(s).

pkg/analyzer/lib/src/context/context.dart

Index: pkg/analyzer/lib/src/context/context.dart
diff --git a/pkg/analyzer/lib/src/context/context.dart b/pkg/analyzer/lib/src/context/context.dart
index 5e42099fac4b86a3fc231cb1a6da8e7de2224c00..3dfa30c564a77e4192cd85839edcea89300661fb 100644
--- a/pkg/analyzer/lib/src/context/context.dart
+++ b/pkg/analyzer/lib/src/context/context.dart
@@ -473,7 +473,7 @@ class AnalysisContextImpl implements InternalAnalysisContext {
     if (identical(_sourceFactory, factory)) {
       return;
     } else if (factory.context != null) {
-      throw new IllegalStateException(
+      throw new StateError(
           "Source factories cannot be shared between contexts");
     }
     if (_sourceFactory != null) {
@@ -2307,7 +2307,7 @@ class SdkAnalysisContext extends AnalysisContextImpl {
     }
     DartSdk sdk = factory.dartSdk;
     if (sdk == null) {
-      throw new IllegalArgumentException(
+      throw new ArgumentError(
           "The source factory for an SDK analysis context must have a DartUriResolver");
     }
     return new AnalysisCache(