Move Promise tracking from debug to isolate.

src/debug.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_DEBUG_H_
 #define V8_DEBUG_H_
 
 #include "src/allocation.h"
 #include "src/arguments.h"
 #include "src/assembler.h"
@@ skipping 315 matching lines @@
   void Put(const CommandMessage& message);
   void Clear();
  private:
   Logger* logger_;
   CommandMessageQueue queue_;
   mutable base::Mutex mutex_;
   DISALLOW_COPY_AND_ASSIGN(LockingCommandMessageQueue);
 };
 
 
-class PromiseOnStack {
- public:
-  PromiseOnStack(Isolate* isolate, PromiseOnStack* prev,
-                 Handle<JSObject> getter);
-  ~PromiseOnStack();
-  StackHandler* handler() { return handler_; }
-  Handle<JSObject> promise() { return promise_; }
-  PromiseOnStack* prev() { return prev_; }
- private:
-  Isolate* isolate_;
-  StackHandler* handler_;
-  Handle<JSObject> promise_;
-  PromiseOnStack* prev_;
-};
-
-
 // This class contains the debugger support. The main purpose is to handle
 // setting break points in the code.
 //
 // This class controls the debug info for all functions which currently have
 // active breakpoints in them. This debug info is held in the heap root object
 // debug_info which is a FixedArray. Each entry in this list is of class
 // DebugInfo.
 class Debug {
  public:
   // Debug event triggers.
@@ skipping 83 matching lines @@
   static Handle<Object> GetSourceBreakLocations(
       Handle<SharedFunctionInfo> shared,
       BreakPositionAlignment position_aligment);
 
   // Check whether a global object is the debug global object.
   bool IsDebugGlobal(GlobalObject* global);
 
   // Check whether this frame is just about to return.
   bool IsBreakAtReturn(JavaScriptFrame* frame);
 
-  // Promise handling.
-  // Push and pop a promise and the current try-catch handler.
-  void PushPromise(Handle<JSObject> promise);
-  void PopPromise();
-
   // Support for LiveEdit
   void FramesHaveBeenDropped(StackFrame::Id new_break_frame_id,
                              LiveEdit::FrameDropMode mode,
                              Object** restarter_frame_function_pointer);
 
   // Passed to MakeWeak.
   static void HandleWeakDebugInfo(
       const v8::WeakCallbackData<v8::Value, void>& data);
 
   // Threading support.
@@ skipping 74 matching lines @@
       Handle<Script> script, v8::DebugEvent type);
   MUST_USE_RESULT MaybeHandle<Object> MakePromiseEvent(
       Handle<JSObject> promise_event);
   MUST_USE_RESULT MaybeHandle<Object> MakeAsyncTaskEvent(
       Handle<JSObject> task_event);
 
   // Mirror cache handling.
   void ClearMirrorCache();
 
   // Returns a promise if the pushed try-catch handler matches the current one.
-  Handle<Object> GetPromiseOnStackOnThrow();
   bool PromiseHasRejectHandler(Handle<JSObject> promise);
 
   void CallEventCallback(v8::DebugEvent event,
                          Handle<Object> exec_state,
                          Handle<Object> event_data,
                          v8::Debug::ClientData* client_data);
   void ProcessDebugEvent(v8::DebugEvent event,
                          Handle<JSObject> event_data,
                          bool auto_continue);
   void NotifyMessageHandler(v8::DebugEvent event,
@@ skipping 86 matching lines @@
     Address step_out_fp_;
 
     // Stores the way how LiveEdit has patched the stack. It is used when
     // debugger returns control back to user script.
     LiveEdit::FrameDropMode frame_drop_mode_;
 
     // When restarter frame is on stack, stores the address
     // of the pointer to function being restarted. Otherwise (most of the time)
     // stores NULL. This pointer is used with 'step in' implementation.
     Object** restarter_frame_function_pointer_;
-
-    // When a promise is being resolved, we may want to trigger a debug event
-    // if we catch a throw.  For this purpose we remember the try-catch
-    // handler address that would catch the exception.  We also hold onto a
-    // closure that returns a promise if the exception is considered uncaught.
-    // Due to the possibility of reentry we use a linked list.
-    PromiseOnStack* promise_on_stack_;
   };
 
   // Storage location for registers when handling debug break calls
   ThreadLocal thread_local_;
 
   Isolate* isolate_;
 
   friend class Isolate;
   friend class DebugScope;
   friend class DisableBreak;
@@ skipping 89 matching lines @@
   // several frames above.
   // There is no calling conventions here, because it never actually gets
   // called, it only gets returned to.
   static void GenerateFrameDropperLiveEdit(MacroAssembler* masm);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_DEBUG_H_