Merge bleeding edge into the GC branch up to 7948. The asserts

src/isolate.h

Index: src/isolate.h
===================================================================
--- src/isolate.h	(revision 7948)
+++ src/isolate.h	(working copy)
@@ -224,6 +224,7 @@
     ASSERT(try_catch_handler_address_ == NULL);
   }
 
+  Isolate* isolate_;
   // The context where the current execution method is created and for variable
   // lookups.
   Context* context_;
@@ -487,6 +488,10 @@
   // Safe to call multiple times.
   static void EnsureDefaultIsolate();
 
+  // Find the PerThread for this particular (isolate, thread) combination
+  // If one does not yet exist, return null.
+  PerIsolateThreadData* FindPerThreadDataForThisThread();
+
 #ifdef ENABLE_DEBUGGER_SUPPORT
   // Get the debugger from the default isolate. Preinitializes the
   // default isolate if needed.
@@ -989,6 +994,9 @@
 
   void ResetEagerOptimizingData();
 
+  void SetData(void* data) { embedder_data_ = data; }
+  void* GetData() { return embedder_data_; }
+
  private:
   Isolate();
 
@@ -1066,7 +1074,7 @@
   // If one does not yet exist, allocate a new one.
   PerIsolateThreadData* FindOrAllocatePerThreadDataForThisThread();
 
-  // PreInits and returns a default isolate. Needed when a new thread tries
+// PreInits and returns a default isolate. Needed when a new thread tries
   // to create a Locker for the first time (the lock itself is in the isolate).
   static Isolate* GetDefaultIsolateForLocking();
 
@@ -1151,6 +1159,7 @@
   unibrow::Mapping<unibrow::Ecma262Canonicalize> interp_canonicalize_mapping_;
   ZoneObjectList frame_element_constant_list_;
   ZoneObjectList result_constant_list_;
+  void* embedder_data_;
 
 #if defined(V8_TARGET_ARCH_ARM) && !defined(__arm__) || \
     defined(V8_TARGET_ARCH_MIPS) && !defined(__mips__)
@@ -1198,9 +1207,13 @@
 
   friend class ExecutionAccess;
   friend class IsolateInitializer;
+  friend class ThreadManager;
+  friend class Simulator;
+  friend class StackGuard;
   friend class ThreadId;
   friend class v8::Isolate;
   friend class v8::Locker;
+  friend class v8::Unlocker;
 
   DISALLOW_COPY_AND_ASSIGN(Isolate);
 };