Revert "Handlify GetProperty."

src/execution.cc

 // Copyright 2014 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 "execution.h"
 
 #include "bootstrapper.h"
 #include "codegen.h"
 #include "deoptimizer.h"
 #include "isolate-inl.h"
@@ skipping 713 matching lines @@
 Handle<Object> Execution::CharAt(Handle<String> string, uint32_t index) {
   Isolate* isolate = string->GetIsolate();
   Factory* factory = isolate->factory();
 
   int int_index = static_cast<int>(index);
   if (int_index < 0 || int_index >= string->length()) {
     return factory->undefined_value();
   }
 
   Handle<Object> char_at = Object::GetProperty(
-      isolate->js_builtins_object(),
-      factory->char_at_string()).ToHandleChecked();
+      isolate->js_builtins_object(), factory->char_at_string());
   if (!char_at->IsJSFunction()) {
     return factory->undefined_value();
   }
 
   Handle<Object> index_object = factory->NewNumberFromInt(int_index);
   Handle<Object> index_arg[] = { index_object };
   Handle<Object> result;
   ASSIGN_RETURN_ON_EXCEPTION_VALUE(
       isolate, result,
       TryCall(Handle<JSFunction>::cast(char_at),
               string,
               ARRAY_SIZE(index_arg),
               index_arg),
       factory->undefined_value());
   return result;
 }
 
 
 MaybeHandle<JSFunction> Execution::InstantiateFunction(
     Handle<FunctionTemplateInfo> data) {
   Isolate* isolate = data->GetIsolate();
   if (!data->do_not_cache()) {
     // Fast case: see if the function has already been instantiated
     int serial_number = Smi::cast(data->serial_number())->value();
     Handle<JSObject> cache(isolate->native_context()->function_cache());
     Handle<Object> elm =
-        Object::GetElement(isolate, cache, serial_number).ToHandleChecked();
+        Object::GetElementNoExceptionThrown(isolate, cache, serial_number);
     if (elm->IsJSFunction()) return Handle<JSFunction>::cast(elm);
   }
   // The function has not yet been instantiated in this context; do it.
   Handle<Object> args[] = { data };
   Handle<Object> result;
   ASSIGN_RETURN_ON_EXCEPTION(
       isolate, result,
       Call(isolate,
            isolate->instantiate_fun(),
            isolate->js_builtins_object(),
@@ skipping 213 matching lines @@
   if (stack_guard->IsInstallCodeRequest()) {
     ASSERT(isolate->concurrent_recompilation_enabled());
     stack_guard->Continue(INSTALL_CODE);
     isolate->optimizing_compiler_thread()->InstallOptimizedFunctions();
   }
   isolate->runtime_profiler()->OptimizeNow();
   return isolate->heap()->undefined_value();
 }
 
 } }  // namespace v8::internal