Remove unused/not working function tracing flag and functionality.

runtime/vm/object.cc

 // Copyright (c) 2012, 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/object.h"
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/assembler.h"
 #include "vm/bigint_operations.h"
@@ skipping 7211 matching lines @@
     intptr_t result_index = deopt_ids[i];
     ASSERT(result.At(result_index) == Object::null());
     result.SetAt(result_index, Object::Handle(ic_data_objs.At(i)));
   }
   return result.raw();
 }
 
 
 void Code::ExtractUncalledStaticCallDeoptIds(
     GrowableArray<intptr_t>* deopt_ids) const {
+  ASSERT(!IsNull() && !is_optimized());
   ASSERT(deopt_ids != NULL);
   deopt_ids->Clear();
   const PcDescriptors& descriptors =
       PcDescriptors::Handle(this->pc_descriptors());
   Function& function = Function::Handle();
   for (intptr_t i = 0; i < descriptors.Length(); i++) {
     if (descriptors.DescriptorKind(i) == PcDescriptors::kFuncCall) {
       // Static call.
       uword target_addr;
       CodePatcher::GetStaticCallAt(descriptors.PC(i), &function, &target_addr);
@@ skipping 167 matching lines @@
   VariableDescAddr(scope_index)->context_level = Smi::New(context_level);
 }
 
 
 const char* ContextScope::ToCString() const {
   return "ContextScope";
 }
 
 
 const char* ICData::ToCString() const {
-  const char* kFormat = "ICData target:%s";
+  const char* kFormat = "ICData target:'%s' num-checks: %"Pd"";
   const String& name = String::Handle(target_name());
-  intptr_t len = OS::SNPrint(NULL, 0, kFormat, name.ToCString()) + 1;
+  const intptr_t num = NumberOfChecks();
+  intptr_t len = OS::SNPrint(NULL, 0, kFormat, name.ToCString(), num) + 1;
   char* chars = Isolate::Current()->current_zone()->Alloc<char>(len);
-  OS::SNPrint(chars, len, kFormat, name.ToCString());
+  OS::SNPrint(chars, len, kFormat, name.ToCString(), num);
   return chars;
 }
 
 
 void ICData::set_function(const Function& value) const {
   StorePointer(&raw_ptr()->function_, value.raw());
 }
 
 
 void ICData::set_target_name(const String& value) const {
@@ skipping 4541 matching lines @@
   }
   return result.raw();
 }
 
 
 const char* WeakProperty::ToCString() const {
   return "_WeakProperty";
 }
 
 }  // namespace dart