[Isolates] Fix Linux build in Isolates branch.

test/cctest/test-log.cc

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 //
 // Tests of logging functions from log.h
 
 #ifdef ENABLE_LOGGING_AND_PROFILING
 
 #ifdef __linux__
 #include <math.h>
 #include <pthread.h>
 #include <signal.h>
@@ skipping 371 matching lines @@
 };
 
 
 class LoopingJsThread : public LoopingThread {
  public:
   explicit LoopingJsThread(v8::internal::Isolate* isolate)
       : LoopingThread(isolate) { }
   void RunLoop() {
     v8::Locker locker;
     CHECK(i::Isolate::Current() != NULL);
-    CHECK(i::Isolate::Current()->thread_manager()->HasId());
+    CHECK(i::Isolate::Current()->thread_manager()->CurrentId() > 0);
     SetV8ThreadId();
     while (IsRunning()) {
       v8::HandleScope scope;
       v8::Persistent<v8::Context> context = v8::Context::New();
       CHECK(!context.IsEmpty());
       {
         v8::Context::Scope context_scope(context);
         SignalRunning();
         CompileAndRunScript(
             "var j; for (var i=0; i<10000; ++i) { j = Math.sin(i); }");
       }
       context.Dispose();
       i::OS::Sleep(1);
     }
   }
 };
 
 
 class LoopingNonJsThread : public LoopingThread {
  public:
   explicit LoopingNonJsThread(v8::internal::Isolate* isolate)
       : LoopingThread(isolate) { }
   void RunLoop() {
     v8::Locker locker;
     v8::Unlocker unlocker;
     // Now thread has V8's id, but will not run VM code.
     CHECK(i::Isolate::Current() != NULL);
-    CHECK(i::Isolate::Current()->thread_manager()->HasId());
+    CHECK(i::Isolate::Current()->thread_manager()->CurrentId() > 0);
     double i = 10;
     SignalRunning();
     while (IsRunning()) {
       i = sin(i);
       i::OS::Sleep(1);
     }
   }
 };
 
 
@@ skipping 764 matching lines @@
   // Make sure that all log data is written prior crash due to CHECK failure.
   fflush(stdout);
   CHECK(results_equal);
 
   env->Exit();
   LOGGER->TearDown();
   i::FLAG_always_compact = saved_always_compact;
 }
 
 #endif  // ENABLE_LOGGING_AND_PROFILING