Unskip EE tests

src/ExpressionEvaluator/CSharp/Test/ExpressionCompiler/ExpressionCompilerTests.cs

@@ -2283,6 +2283,7 @@ static void Main()
         /// Flow analysis should catch definite assignment errors
         /// for variables declared within the expression.
         /// </summary>
+        [WorkItem(549, "https://github.com/dotnet/roslyn/issues/549")]
         [Fact(Skip = "https://github.com/dotnet/roslyn/issues/549")]
         public void FlowAnalysis()
         {

src/ExpressionEvaluator/CSharp/Test/ResultProvider/DebuggerBrowsableAttributeTests.cs

@@ -248,11 +248,11 @@ class C
         }
 
         /// <summary>
-        /// Value should not be expandable if all members are marked
+        /// Instance of type where all members are marked
         /// [DebuggerBrowsable(DebuggerBrowsableState.RootHidden)].
         /// </summary>
         [WorkItem(934800, "http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/934800")]
-        [Fact(Skip = "934800")]
+        [Fact]
         public void RootHidden_Empty()
         {
             var source =
@@ -282,7 +282,9 @@ class C
                 evalFlags: DkmEvaluationResultFlags.None);
             var evalResult = FormatResult("o", value);
             Verify(evalResult,
-                EvalResult("o", "{C}", "C", "o"));
+                EvalResult("o", "{C}", "C", "o", DkmEvaluationResultFlags.Expandable)); // Ideally, not expandable.
+            var children = GetChildren(evalResult);
+            Verify(children); // No children.
         }
 
         [Fact]

src/ExpressionEvaluator/CSharp/Test/ResultProvider/DebuggerDisplayAttributeTests.cs

@@ -334,8 +334,7 @@ class Wrapper
                 EvalResult("NoDisplayPointer", PointerToString(IntPtr.Zero), "NoDisplay*", "wrapper.display.NoDisplayPointer"));
         }
 
-        [WorkItem(321, "https://github.com/dotnet/roslyn/issues/321")]
-        [Fact(Skip = "https://github.com/dotnet/roslyn/issues/321")]
+        [Fact]
         public void PointerDereferenceExpansion_NonNull()
         {
             var source = @"
@@ -396,7 +395,7 @@ public C(IntPtr d, IntPtr nd)
                 Verify(DepthFirstSearch(FormatResult("c", testValue), maxDepth: 3),
                     EvalResult("c", "{C}", "C", "c", DkmEvaluationResultFlags.Expandable),
                     EvalResult("DisplayPointer", displayPtrString, "Display*", "c.DisplayPointer", DkmEvaluationResultFlags.Expandable),
-                    EvalResult("Name", "Value", "Type", "*c.DisplayPointer", DkmEvaluationResultFlags.Expandable),
+                    EvalResult("*c.DisplayPointer", "Value", "Type", "*c.DisplayPointer", DkmEvaluationResultFlags.Expandable),
                     EvalResult("DisplayPointer", displayPtrString, "Display*", "(*c.DisplayPointer).DisplayPointer", DkmEvaluationResultFlags.Expandable),
                     EvalResult("NoDisplayPointer", noDisplayPtrString, "NoDisplay*", "(*c.DisplayPointer).NoDisplayPointer", DkmEvaluationResultFlags.Expandable),
                     EvalResult("NoDisplayPointer", noDisplayPtrString, "NoDisplay*", "c.NoDisplayPointer", DkmEvaluationResultFlags.Expandable),