[debugger] remove obsolete work-around for return position.

src/debug/debug.cc

 // 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.
 
 #include "src/debug/debug.h"
 
 #include "src/api.h"
 #include "src/arguments.h"
 #include "src/bootstrapper.h"
 #include "src/code-stubs.h"
@@ skipping 62 matching lines @@
   return v8::Utils::ToLocal(native_context);
 }
 
 BreakLocation::BreakLocation(Handle<DebugInfo> debug_info, DebugBreakType type,
                              int code_offset, int position,
                              int statement_position)
     : debug_info_(debug_info),
       code_offset_(code_offset),
       type_(type),
       position_(position),
-      statement_position_(statement_position) {
-  if (type == DEBUG_BREAK_SLOT_AT_RETURN) {
-    int return_position = 0;
-    SharedFunctionInfo* shared = debug_info->shared();
-    if (shared->HasSourceCode()) {
-      return_position =
-          std::max(shared->end_position() - 1, shared->start_position());
-    }
-    // TODO(yangguo): find out why return position is wrong for liveedit.
-    position_ = return_position;
-    statement_position_ = return_position;
-  }
-}
+      statement_position_(statement_position) {}
 
 BreakLocation::Iterator* BreakLocation::GetIterator(
     Handle<DebugInfo> debug_info, BreakLocatorType type) {
   if (debug_info->abstract_code()->IsBytecodeArray()) {
     return new BytecodeArrayIterator(debug_info, type);
   } else {
     return new CodeIterator(debug_info, type);
   }
 }
 
@@ skipping 2478 matching lines @@
 }
 
 
 void LockingCommandMessageQueue::Clear() {
   base::LockGuard<base::Mutex> lock_guard(&mutex_);
   queue_.Clear();
 }
 
 }  // namespace internal
 }  // namespace v8