Infer types of double literals.

pkg/front_end/lib/src/fasta/kernel/kernel_ast_factory.dart

Index: pkg/front_end/lib/src/fasta/kernel/kernel_ast_factory.dart
diff --git a/pkg/front_end/lib/src/fasta/kernel/kernel_ast_factory.dart b/pkg/front_end/lib/src/fasta/kernel/kernel_ast_factory.dart
index 555f799eff019772132cafdcf6d1bd7eb2cc41a9..ea9a35050a9a60c826a141a5bb98db8fa729a758 100644
--- a/pkg/front_end/lib/src/fasta/kernel/kernel_ast_factory.dart
+++ b/pkg/front_end/lib/src/fasta/kernel/kernel_ast_factory.dart
@@ -18,6 +18,11 @@ class KernelAstFactory implements AstFactory<VariableDeclaration> {
   }
 
   @override
+  KernelDoubleLiteral doubleLiteral(double value, Token token) {
+    return new KernelDoubleLiteral(value)..fileOffset = offsetForToken(token);
+  }
+
+  @override
   ExpressionStatement expressionStatement(Expression expression) {
     return new KernelExpressionStatement(expression);
   }
@@ -35,7 +40,7 @@ class KernelAstFactory implements AstFactory<VariableDeclaration> {
   }
 
   @override
-  KernelIntLiteral intLiteral(value, Token token) {
+  KernelIntLiteral intLiteral(int value, Token token) {
     return new KernelIntLiteral(value)..fileOffset = offsetForToken(token);
   }