Issue 2862. Report warning when 'default' of switch has fall-through.

compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerCompilerTest.java

Index: compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerCompilerTest.java
diff --git a/compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerCompilerTest.java b/compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerCompilerTest.java
index 01a41796618f924c73f4066c83cb4354308bcafe..bb05a33de629fd2a0176742980ca4d67007c8643 100644
--- a/compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerCompilerTest.java
+++ b/compiler/javatests/com/google/dart/compiler/type/TypeAnalyzerCompilerTest.java
@@ -470,6 +470,8 @@ public class TypeAnalyzerCompilerTest extends CompilerTestCase {
         "        throw new Exception();",
         "      case 4:",
         "        bar();",
+        "      default:",
+        "        bar();",
         "    }",
         "  }",
         "}",
@@ -477,7 +479,8 @@ public class TypeAnalyzerCompilerTest extends CompilerTestCase {
         "");
     assertErrors(
         libraryResult.getErrors(),
-        errEx(ResolverErrorCode.SWITCH_CASE_FALL_THROUGH, 14, 9, 6));
+        errEx(ResolverErrorCode.SWITCH_CASE_FALL_THROUGH, 14, 9, 6),
+        errEx(ResolverErrorCode.SWITCH_CASE_FALL_THROUGH, 16, 9, 6));
   }
 
   /**
@@ -3363,6 +3366,7 @@ public class TypeAnalyzerCompilerTest extends CompilerTestCase {
         "  switch (true) {",
         "    default:",
         "      int v = foo;",
+        "      break;",
         "  }",
         "}",
         "");