Remove isolate argument from handle allocation: Part I

runtime/vm/debugger.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_DEBUGGER_H_
 #define VM_DEBUGGER_H_
 
 #include "include/dart_tools_api.h"
 
 #include "vm/object.h"
@@ skipping 608 matching lines @@
 
   void SyncBreakpointLocation(BreakpointLocation* loc);
 
   ActivationFrame* TopDartFrame() const;
   static ActivationFrame* CollectDartFrame(Isolate* isolate,
                                            uword pc,
                                            StackFrame* frame,
                                            const Code& code,
                                            const Array& deopt_frame,
                                            intptr_t deopt_frame_offset);
-  static RawArray* DeoptimizeToArray(Isolate* isolate,
+  static RawArray* DeoptimizeToArray(Thread* thread,
                                      StackFrame* frame,
                                      const Code& code);
   static DebuggerStackTrace* CollectStackTrace();
   void SignalBpResolved(Breakpoint *bpt);
   void SignalPausedEvent(ActivationFrame* top_frame,
                          Breakpoint* bpt);
 
   intptr_t nextId() { return next_id_++; }
 
   bool ShouldPauseOnException(DebuggerStackTrace* stack_trace,
                               const Instance& exc);
 
   void CollectLibraryFields(const GrowableObjectArray& field_list,
                             const Library& lib,
                             const String& prefix,
                             bool include_private_fields);
 
   // Handles any events which pause vm execution.  Breakpoints,
   // interrupts, etc.
   void Pause(DebuggerEvent* event);
 
   void HandleSteppingRequest(DebuggerStackTrace* stack_trace);
 
+  Zone* zone() const { return isolate_->current_zone(); }
+
   Isolate* isolate_;
   Dart_Port isolate_id_;  // A unique ID for the isolate in the debugger.
   bool initialized_;
 
   // ID number generator.
   intptr_t next_id_;
 
   BreakpointLocation* latent_locations_;
   BreakpointLocation* breakpoint_locations_;
   CodeBreakpoint* code_breakpoints_;
@@ skipping 29 matching lines @@
 
   friend class Isolate;
   friend class BreakpointLocation;
   DISALLOW_COPY_AND_ASSIGN(Debugger);
 };
 
 
 }  // namespace dart
 
 #endif  // VM_DEBUGGER_H_