Made Isolate a mandatory parameter for everything Handle-related.

test/cctest/test-heap-profiler.cc

Index: test/cctest/test-heap-profiler.cc
diff --git a/test/cctest/test-heap-profiler.cc b/test/cctest/test-heap-profiler.cc
index 6223d8b2c95dfacf27ec1276d3df9a56e1e6d7b4..453a3dbeeffcb3019ee78004afe2c6b524900a3d 100644
--- a/test/cctest/test-heap-profiler.cc
+++ b/test/cctest/test-heap-profiler.cc
@@ -1302,9 +1302,10 @@ TEST(NoHandleLeaks) {
   CompileRun("document = { URL:\"abcdefgh\" };");
 
   v8::Handle<v8::String> name(v8_str("leakz"));
-  int count_before = i::HandleScope::NumberOfHandles();
+  i::Isolate* isolate = i::Isolate::Current();
+  int count_before = i::HandleScope::NumberOfHandles(isolate);
   v8::HeapProfiler::TakeSnapshot(name);
-  int count_after = i::HandleScope::NumberOfHandles();
+  int count_after = i::HandleScope::NumberOfHandles(isolate);
   CHECK_EQ(count_before, count_after);
 }