Refactor TimeBase to post tasks. Workers to use real Idle tasks.

Source/core/dom/ScriptRunnerTest.cpp

Index: Source/core/dom/ScriptRunnerTest.cpp
diff --git a/Source/core/dom/ScriptRunnerTest.cpp b/Source/core/dom/ScriptRunnerTest.cpp
index 6a82fffb9ead723fc5aa1ea94860af2a89b330af..9fadb38fcfe7a29e273a5808a2dd5d0839114c8c 100644
--- a/Source/core/dom/ScriptRunnerTest.cpp
+++ b/Source/core/dom/ScriptRunnerTest.cpp
@@ -86,6 +86,10 @@ class ScriptRunnerTest : public testing::Test {
 public:
     void SetUp() override
     {
+        Scheduler::shutdown();

[Sami, 2015/04/09 10:52:29]

Why is this change needed?

[alex clarke (OOO till 29th), 2015/04/10 15:29:34]

I think this was due to some shutdown problems.  Fortunately this no longer
seems to be needed.

+
+        m_oldPlatform = Platform::current();
+        Platform::initialize(&m_platform);
         m_document = Document::create();
         m_element = m_document->createElement("foo", ASSERT_NO_EXCEPTION);