Revert 12083: Implements a new API to set a function entry hook for profiling.

src/code-stubs.cc

Index: src/code-stubs.cc
diff --git a/src/code-stubs.cc b/src/code-stubs.cc
index f672d33e2124cf880c599cc28187b0cca234c9a4..8f316606c20d29b6889512f41939c5af1f6ecccc 100644
--- a/src/code-stubs.cc
+++ b/src/code-stubs.cc
@@ -470,26 +470,4 @@ void ElementsTransitionAndStoreStub::Generate(MacroAssembler* masm) {
   KeyedStoreIC::GenerateRuntimeSetProperty(masm, strict_mode_);
 }
 
-
-FunctionEntryHook ProfileEntryHookStub::entry_hook_ = NULL;
-
-
-void ProfileEntryHookStub::EntryHookTrampoline(intptr_t function,
-                                               intptr_t stack_pointer) {
-  if (entry_hook_ != NULL)
-    entry_hook_(function, stack_pointer);
-}
-
-
-bool ProfileEntryHookStub::SetFunctionEntryHook(FunctionEntryHook entry_hook) {
-  // We don't allow setting a new entry hook over one that's
-  // already active, as the hooks won't stack.
-  if (entry_hook != 0 && entry_hook_ != 0)
-    return false;
-
-  entry_hook_ = entry_hook;
-  return true;
-}
-
-
 } }  // namespace v8::internal