"Deiceolate" Thread classes.

src/platform.h

Index: src/platform.h
diff --git a/src/platform.h b/src/platform.h
index 725008a784c531c139117e5c86a35372c5fcc4fa..31f727cf460abad4cf1e5e4a92a0b836633079db 100644
--- a/src/platform.h
+++ b/src/platform.h
@@ -384,9 +384,9 @@ class Thread {
     int stack_size;
   };
 
-  // Create new thread (with a value for storing in the TLS isolate field).
-  Thread(Isolate* isolate, const Options& options);
-  Thread(Isolate* isolate, const char* name);
+  // Create new thread.
+  explicit Thread(const Options& options);
+  explicit Thread(const char* name);
   virtual ~Thread();
 
   // Start new thread by calling the Run() method in the new thread.
@@ -433,7 +433,6 @@ class Thread {
   // A hint to the scheduler to let another thread run.
   static void YieldCPU();
 
-  Isolate* isolate() const { return isolate_; }
 
   // The thread name length is limited to 16 based on Linux's implementation of
   // prctl().
@@ -447,7 +446,6 @@ class Thread {
 
   PlatformData* data_;
 
-  Isolate* isolate_;
   char name_[kMaxThreadNameLength];
   int stack_size_;