[Isolates] CompilationCache was moved to Isolate.

src/debug.cc

 // Copyright 2006-2008 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 2447 matching lines @@
     // Send an empty command to the debugger if in a break to make JavaScript
     // run again if the debugger is closed.
     if (Debug::InDebugger()) {
       ProcessCommand(Vector<const uint16_t>::empty());
     }
   }
 }
 
 
 void Debugger::ListenersChanged() {
+  Isolate* isolate = Isolate::Current();
   if (IsDebuggerActive()) {
     // Disable the compilation cache when the debugger is active.
-    CompilationCache::Disable();
+    isolate->compilation_cache()->Disable();
     debugger_unload_pending_ = false;
   } else {
-    CompilationCache::Enable();
+    isolate->compilation_cache()->Enable();
     // Unload the debugger if event listener and message handler cleared.
     // Schedule this for later, because we may be in non-V8 thread.
     debugger_unload_pending_ = true;
   }
 }
 
 
 void Debugger::SetHostDispatchHandler(v8::Debug::HostDispatchHandler handler,
                                       int period) {
   host_dispatch_handler_ = handler;
@@ skipping 443 matching lines @@
     {
       Locker locker;
       Debugger::CallMessageDispatchHandler();
     }
   }
 }
 
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 } }  // namespace v8::internal