Fix runtime assert in %LiveEditCheckAndDropActivations.

src/runtime/runtime-liveedit.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 "src/v8.h"
 
 #include "src/arguments.h"
 #include "src/debug.h"
 #include "src/liveedit.h"
 #include "src/runtime/runtime.h"
@@ skipping 216 matching lines @@
 RUNTIME_FUNCTION(Runtime_LiveEditCheckAndDropActivations) {
   HandleScope scope(isolate);
   CHECK(isolate->debug()->live_edit_enabled());
   DCHECK(args.length() == 2);
   CONVERT_ARG_HANDLE_CHECKED(JSArray, shared_array, 0);
   CONVERT_BOOLEAN_ARG_CHECKED(do_drop, 1);
   RUNTIME_ASSERT(shared_array->length()->IsSmi());
   RUNTIME_ASSERT(shared_array->HasFastElements())
   int array_length = Smi::cast(shared_array->length())->value();
   for (int i = 0; i < array_length; i++) {
-    Handle<Object> element =
-        Object::GetElement(isolate, shared_array, i).ToHandleChecked();
+    Handle<Object> element;
+    ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
+        isolate, element, Object::GetElement(isolate, shared_array, i));
     RUNTIME_ASSERT(
         element->IsJSValue() &&
         Handle<JSValue>::cast(element)->value()->IsSharedFunctionInfo());
   }
 
   return *LiveEdit::CheckAndDropActivations(shared_array, do_drop);
 }
 
 
 // Compares 2 strings line-by-line, then token-wise and returns diff in form
@@ skipping 35 matching lines @@
   // We don't really care what the inlined frame index is, since we are
   // throwing away the entire frame anyways.
   const char* error_message = LiveEdit::RestartFrame(it.frame());
   if (error_message) {
     return *(isolate->factory()->InternalizeUtf8String(error_message));
   }
   return heap->true_value();
 }
 }
 }  // namespace v8::internal