Cleanup the way the debugger stores live registers when entering at a break...

src/ia32/code-stubs-ia32.cc

Index: src/ia32/code-stubs-ia32.cc
===================================================================
--- src/ia32/code-stubs-ia32.cc	(revision 5352)
+++ src/ia32/code-stubs-ia32.cc	(working copy)
@@ -3054,7 +3054,7 @@
   Label empty_handle;
   Label prologue;
   Label promote_scheduled_exception;
-  __ EnterApiExitFrame(ExitFrame::MODE_NORMAL, kStackSpace, kArgc);
+  __ EnterApiExitFrame(kStackSpace, kArgc);
   STATIC_ASSERT(kArgc == 4);
   if (kPassHandlesDirectly) {
     // When handles as passed directly we don't have to allocate extra
@@ -3100,7 +3100,7 @@
   // It was non-zero.  Dereference to get the result value.
   __ mov(eax, Operand(eax, 0));
   __ bind(&prologue);
-  __ LeaveExitFrame(ExitFrame::MODE_NORMAL);
+  __ LeaveExitFrame();
   __ ret(0);
   __ bind(&promote_scheduled_exception);
   __ TailCallRuntime(Runtime::kPromoteScheduledException, 0, 1);
@@ -3177,7 +3177,7 @@
   __ j(zero, &failure_returned, not_taken);
 
   // Exit the JavaScript to C++ exit frame.
-  __ LeaveExitFrame(mode_);
+  __ LeaveExitFrame();
   __ ret(0);
 
   // Handling of failure.
@@ -3277,7 +3277,7 @@
   // a garbage collection and retrying the builtin (twice).
 
   // Enter the exit frame that transitions from JavaScript to C++.
-  __ EnterExitFrame(mode_);
+  __ EnterExitFrame();
 
   // eax: result parameter for PerformGC, if any (setup below)
   // ebx: pointer to builtin function  (C callee-saved)