Migrate logging infrastructure Isolate->Thread

runtime/vm/log_test.cc

Index: runtime/vm/log_test.cc
diff --git a/runtime/vm/log_test.cc b/runtime/vm/log_test.cc
index 370fefc2f81cef9b3fde8c28324214c2dab3ffdd..ba2251ed74876825bd8d405911a0a2c67410c2dc 100644
--- a/runtime/vm/log_test.cc
+++ b/runtime/vm/log_test.cc
@@ -47,8 +47,7 @@ class LogTestHelper : public AllStatic {
 
 TEST_CASE(Log_Macro) {
   test_output_ = NULL;
-  Isolate* isolate = Isolate::Current();
-  Log* log = isolate->Log();
+  Log* log = thread->Log();
   LogTestHelper::SetPrinter(log, TestPrinter);
 
   ISL_Print("Hello %s", "World");
@@ -72,15 +71,13 @@ TEST_CASE(Log_Block) {
   test_output_ = NULL;
   Log* log = new Log(TestPrinter);
 
-  Isolate* isolate = Isolate::Current();
-
   EXPECT_EQ(reinterpret_cast<const char*>(NULL), test_output_);
   {
-    LogBlock ba(isolate, log);
+    LogBlock ba(thread, log);
     log->Print("APPLE");
     EXPECT_EQ(reinterpret_cast<const char*>(NULL), test_output_);
     {
-      LogBlock ba(isolate, log);
+      LogBlock ba(thread, log);
       log->Print("BANANA");
       EXPECT_EQ(reinterpret_cast<const char*>(NULL), test_output_);
     }