[bindings] Remove History.(push|replace)State custom bindings

Source/bindings/core/v8/custom/V8HistoryCustom.cpp

Index: Source/bindings/core/v8/custom/V8HistoryCustom.cpp
diff --git a/Source/bindings/core/v8/custom/V8HistoryCustom.cpp b/Source/bindings/core/v8/custom/V8HistoryCustom.cpp
deleted file mode 100644
index 6f9dcaa5d6faed6eb1d522af439b8cf7c22ebdb2..0000000000000000000000000000000000000000
--- a/Source/bindings/core/v8/custom/V8HistoryCustom.cpp
+++ /dev/null
@@ -1,55 +0,0 @@
-/*
- * Copyright (C) 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
- * copyright notice, this list of conditions and the following disclaimer
- * in the documentation and/or other materials provided with the
- * distribution.
- *     * Neither the name of Google Inc. nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "bindings/core/v8/V8History.h"
-
-#include "bindings/core/v8/ExceptionState.h"
-#include "bindings/core/v8/SerializedScriptValue.h"
-#include "bindings/core/v8/SerializedScriptValueFactory.h"
-#include "bindings/core/v8/V8Binding.h"
-#include "bindings/core/v8/V8HiddenValue.h"
-#include "bindings/core/v8/V8Window.h"
-#include "core/dom/ExceptionCode.h"
-#include "core/frame/History.h"
-
-namespace blink {
-
-void V8History::pushStateMethodEpilogueCustom(const v8::FunctionCallbackInfo<v8::Value>& info, History*)
-{
-    V8HiddenValue::deleteHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::state(info.GetIsolate()));

[bashi, 2015/04/01 09:23:40]

Help me understand: Not directly related to this CL, but why do we need to
remove cached value explicitly? In other words, why making stateChanged() return
true doesn't work?

[vivekg, 2015/04/01 09:40:49]

Agreed and it makes perfect sense to have stateChanged return true than having
either the custom binding or explicit clearing. 

-}
-
-void V8History::replaceStateMethodEpilogueCustom(const v8::FunctionCallbackInfo<v8::Value>& info, History*)
-{
-    V8HiddenValue::deleteHiddenValue(info.GetIsolate(), info.Holder(), V8HiddenValue::state(info.GetIsolate()));
-}
-
-} // namespace blink