Thread and Timeline fixes for Mojo.

runtime/include/dart_api.h

Index: runtime/include/dart_api.h
diff --git a/runtime/include/dart_api.h b/runtime/include/dart_api.h
index 2ac47398d1090ddfa21905eb56350f9f68c3dfcd..b0d6b3d9f5143a72107792f0c5aed5e3dcb74d4e 100755
--- a/runtime/include/dart_api.h
+++ b/runtime/include/dart_api.h
@@ -884,6 +884,14 @@ DART_EXPORT void* Dart_IsolateData(Dart_Isolate isolate);
 DART_EXPORT Dart_Handle Dart_DebugName();
 
 /**
+ * Threads created by the embedder (other than the thread that called

[Ivan Posva, 2015/12/01 05:08:42]

This should not be necessary if I understand the design correctly. Let's discuss
offline...

[zra, 2015/12/01 17:38:21]

Move to OSThread::Current() as discussed offline.

+ * Dart_Initialize) must call this function before entering an Isolate.
+ *
+ * Returns true if the thread is successfully registered.
+ */
+DART_EXPORT bool Dart_RegisterEmbedderThread(const char* name);
+
+/**
  * Enters an isolate. After calling this function,
  * the current isolate will be set to the provided isolate.
  *