Remove a bunch of Isolate::UncheckedCurrent calls

src/d8.cc

Index: src/d8.cc
diff --git a/src/d8.cc b/src/d8.cc
index 1e204e96e2ee64e95bb7bc92df334ab8b2b39f18..dc8106bc336069ae811dc45b4ec3cdc6a1512f8f 100644
--- a/src/d8.cc
+++ b/src/d8.cc
@@ -677,7 +677,7 @@ Counter* CounterCollection::GetNextCounter() {
 }
 
 
-void Shell::MapCounters(const char* name) {
+void Shell::MapCounters(v8::Isolate* isolate, const char* name) {
   counters_file_ = base::OS::MemoryMappedFile::create(
       name, sizeof(CounterCollection), &local_counters_);
   void* memory = (counters_file_ == NULL) ?
@@ -687,9 +687,9 @@ void Shell::MapCounters(const char* name) {
     Exit(1);
   }
   counters_ = static_cast<CounterCollection*>(memory);
-  V8::SetCounterFunction(LookupCounter);
-  V8::SetCreateHistogramFunction(CreateHistogram);
-  V8::SetAddHistogramSampleFunction(AddHistogramSample);
+  isolate->SetCounterFunction(LookupCounter);
+  isolate->SetCreateHistogramFunction(CreateHistogram);
+  isolate->SetAddHistogramSampleFunction(AddHistogramSample);
 }
 
 
@@ -897,7 +897,7 @@ void Shell::Initialize(Isolate* isolate) {
   Shell::counter_map_ = new CounterMap();
   // Set up counters
   if (i::StrLength(i::FLAG_map_counters) != 0)
-    MapCounters(i::FLAG_map_counters);
+    MapCounters(isolate, i::FLAG_map_counters);
   if (i::FLAG_dump_counters || i::FLAG_track_gc_object_stats) {
     V8::SetCounterFunction(LookupCounter);
     V8::SetCreateHistogramFunction(CreateHistogram);