Adding checks for V8 functions returning Maybe<bool>

third_party/WebKit/Source/bindings/core/v8/V8Binding.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 899 matching lines @@
                                 int arrayIndex) {
   v8::Local<v8::Value> arrayValue = object->GetInternalField(arrayIndex);
   if (!arrayValue->IsArray())
     return;
   v8::Local<v8::Array> array = v8::Local<v8::Array>::Cast(arrayValue);
   for (int i = array->Length() - 1; i >= 0; --i) {
     v8::Local<v8::Value> item;
     if (!array->Get(isolate->GetCurrentContext(), i).ToLocal(&item))
       return;
     if (item->StrictEquals(value)) {
-      array->Delete(isolate->GetCurrentContext(), i);
+      array->Delete(isolate->GetCurrentContext(), i).ToChecked();
       return;
     }
   }
 }
 
 void moveEventListenerToNewWrapper(v8::Isolate* isolate,
                                    v8::Local<v8::Object> object,
                                    EventListener* oldValue,
                                    v8::Local<v8::Value> newValue,
                                    int arrayIndex) {
@@ skipping 41 matching lines @@
   if (!v8Call(v8::JSON::Parse(isolate, v8String(isolate, stringifiedJSON)),
               parsed, tryCatch)) {
     if (tryCatch.HasCaught())
       exceptionState.rethrowV8Exception(tryCatch.Exception());
   }
 
   return parsed;
 }
 
 }  // namespace blink