Support profiler stack sampling in any situation.

src/frames-ia32.h

 // 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 111 matching lines @@
   static const int kLengthOffset = StandardFrameConstants::kExpressionsOffset;
 };
 
 
 class InternalFrameConstants : public AllStatic {
  public:
   static const int kCodeOffset = StandardFrameConstants::kExpressionsOffset;
 };
 
 
-inline Object* JavaScriptFrame::function() const {
+inline Object* JavaScriptFrame::function_slot_object() const {
   const int offset = JavaScriptFrameConstants::kFunctionOffset;
-  Object* result = Memory::Object_at(fp() + offset);
-  ASSERT(result->IsJSFunction());
-  return result;
+  return Memory::Object_at(fp() + offset);
 }
 
 
 // ----------------------------------------------------
 
 
 
 
   // C Entry frames:
 
@@ skipping 137 matching lines @@
   //           6 |    argv     |   v
   //             +-------------+ <---
   //             |             |
   //   higher    |             |
   //  addresses  |             |
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_FRAMES_IA32_H_