Remove unused pc-descriptor kind kReturn.

runtime/vm/debugger_ia32.cc

 // Copyright (c) 2011, 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.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/debugger.h"
 
 #include "vm/code_patcher.h"
@@ skipping 34 matching lines @@
 void CodeBreakpoint::PatchCode() {
   ASSERT(!is_enabled_);
   const Code& code = Code::Handle(code_);
   const Instructions& instrs = Instructions::Handle(code.instructions());
   {
     WritableInstructionsScope writable(instrs.EntryPoint(), instrs.size());
     switch (breakpoint_kind_) {
       case PcDescriptors::kIcCall:
       case PcDescriptors::kUnoptStaticCall:
       case PcDescriptors::kRuntimeCall:
-      case PcDescriptors::kClosureCall:
-      case PcDescriptors::kReturn: {
+      case PcDescriptors::kClosureCall: {
         saved_value_ = CodePatcher::GetStaticCallTargetAt(pc_, code);
         CodePatcher::PatchStaticCallAt(pc_, code,
                                        StubCode::BreakpointRuntimeEntryPoint());
         break;
       }
       default:
         UNREACHABLE();
     }
   }
   is_enabled_ = true;
 }
 
 
 void CodeBreakpoint::RestoreCode() {
   ASSERT(is_enabled_);
   const Code& code = Code::Handle(code_);
   const Instructions& instrs = Instructions::Handle(code.instructions());
   {
     WritableInstructionsScope writable(instrs.EntryPoint(), instrs.size());
     switch (breakpoint_kind_) {
       case PcDescriptors::kIcCall:
       case PcDescriptors::kUnoptStaticCall:
       case PcDescriptors::kClosureCall:
-      case PcDescriptors::kRuntimeCall:
-      case PcDescriptors::kReturn: {
+      case PcDescriptors::kRuntimeCall: {
         CodePatcher::PatchStaticCallAt(pc_, code, saved_value_);
         break;
       }
       default:
         UNREACHABLE();
     }
   }
   is_enabled_ = false;
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32