Revert "Switch profiler from isolates to threads"

runtime/vm/thread_interrupter_win.cc

Index: runtime/vm/thread_interrupter_win.cc
diff --git a/runtime/vm/thread_interrupter_win.cc b/runtime/vm/thread_interrupter_win.cc
index 4231d1e9d21d88b22997cc45813b4b39b7cb8046..70a5e8c93f877bc049eef271a4c32bae48bdf558 100644
--- a/runtime/vm/thread_interrupter_win.cc
+++ b/runtime/vm/thread_interrupter_win.cc
@@ -7,7 +7,6 @@
 
 #include "vm/flags.h"
 #include "vm/os.h"
-#include "vm/profiler.h"
 #include "vm/thread_interrupter.h"
 
 namespace dart {
@@ -70,6 +69,7 @@ class ThreadInterrupterWin : public AllStatic {
       return;
     }
     InterruptedThreadState its;
+    its.tid = thread->id();
     if (!GrabRegisters(handle, &its)) {
       // Failed to get thread registers.
       ResumeThread(handle);
@@ -80,7 +80,11 @@ class ThreadInterrupterWin : public AllStatic {
       CloseHandle(handle);
       return;
     }
-    Profiler::SampleThread(thread, its);
+    ThreadInterruptCallback callback = NULL;
+    void* callback_data = NULL;
+    if (thread->IsThreadInterrupterEnabled(&callback, &callback_data)) {
+      callback(its, callback_data);
+    }
     ResumeThread(handle);
     CloseHandle(handle);
   }