Move global V8::UseCrankshaft() into the Isolate.

src/v8.h

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 65 matching lines @@
  public:
   // Global actions.
 
   // If Initialize is called with des == NULL, the initial state is
   // created from scratch. If a non-null Deserializer is given, the
   // initial state is created by reading the deserialized data into an
   // empty heap.
   static bool Initialize(Deserializer* des);
   static void TearDown();
   static bool IsRunning() { return is_running_; }
-  static bool UseCrankshaft() { return use_crankshaft_; }
   // To be dead you have to have lived
   // TODO(isolates): move IsDead to Isolate.
   static bool IsDead() { return has_fatal_error_ || has_been_disposed_; }
   static void SetFatalError();
 
   // Report process out of memory. Implementation found in api.cc.
   static void FatalProcessOutOfMemory(const char* location,
                                       bool take_snapshot = false);
 
   // Allows an entropy source to be provided for use in random number
@@ skipping 37 matching lines @@
   // True if engine is currently running
   static bool is_running_;
   // True if V8 has ever been run
   static bool has_been_set_up_;
   // True if error has been signaled for current engine
   // (reset to false if engine is restarted)
   static bool has_fatal_error_;
   // True if engine has been shut down
   // (reset if engine is restarted)
   static bool has_been_disposed_;
-  // True if we are using the crankshaft optimizing compiler.
-  static bool use_crankshaft_;
   // List of callbacks when a Call completes.
   static List<CallCompletedCallback>* call_completed_callbacks_;
   // Allocator for external array buffers.
   static v8::ArrayBuffer::Allocator* array_buffer_allocator_;
 };
 
 
 // JavaScript defines two kinds of 'nil'.
 enum NilValue { kNullValue, kUndefinedValue };
 
 
 } }  // namespace v8::internal
 
 namespace i = v8::internal;
 
 #endif  // V8_V8_H_