[Isolates] Removal of miscellaneous statics from the backend.

src/arm/virtual-frame-arm.h

 // Copyright 2009 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 37 matching lines @@
 
 class VirtualFrame : public ZoneObject {
  public:
   class RegisterAllocationScope;
   // A utility class to introduce a scope where the virtual frame is
   // expected to remain spilled.  The constructor spills the code
   // generator's current frame, and keeps it spilled.
   class SpilledScope BASE_EMBEDDED {
    public:
     explicit SpilledScope(VirtualFrame* frame)
-      : old_is_spilled_(is_spilled_) {
+      : old_is_spilled_(
+          Isolate::Current()->is_virtual_frame_in_spilled_scope()) {
       if (frame != NULL) {
-        if (!is_spilled_) {
+        if (!old_is_spilled_) {
           frame->SpillAll();
         } else {
           frame->AssertIsSpilled();
         }
       }
-      is_spilled_ = true;
+      Isolate::Current()->set_is_virtual_frame_in_spilled_scope(true);
     }
     ~SpilledScope() {
-      is_spilled_ = old_is_spilled_;
+      Isolate::Current()->set_is_virtual_frame_in_spilled_scope(
+          old_is_spilled_);
     }
-    static bool is_spilled() { return is_spilled_; }
+    static bool is_spilled() {
+      return Isolate::Current()->is_virtual_frame_in_spilled_scope();
+    }
 
    private:
-    static bool is_spilled_;
     int old_is_spilled_;
 
     SpilledScope() { }
 
     friend class RegisterAllocationScope;
   };
 
   class RegisterAllocationScope BASE_EMBEDDED {
    public:
     // A utility class to introduce a scope where the virtual frame
@@ skipping 417 matching lines @@
     }
   }
 
   friend class JumpTarget;
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_ARM_VIRTUAL_FRAME_ARM_H_