Remove unused ExceptionStatePlaceholder.cpp

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

-/*
- * Copyright (C) 2013 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 "bindings/core/v8/ExceptionState.h"
-
-namespace blink {
-
-#if DCHECK_IS_ON()
-
-NoExceptionStateAssertionChecker::NoExceptionStateAssertionChecker(
-    const char* file,
-    int line)
-    : ExceptionState(nullptr, ExceptionState::UnknownContext, nullptr, nullptr),
-      m_file(file),
-      m_line(line) {}
-
-void NoExceptionStateAssertionChecker::throwDOMException(ExceptionCode,
-                                                         const String&) {
-  DCHECK_AT(false, m_file, m_line) << "DOMExeption should not be thrown.";
-}
-
-void NoExceptionStateAssertionChecker::throwRangeError(const String& message) {
-  DCHECK_AT(false, m_file, m_line) << "RangeError should not be thrown.";
-}
-
-void NoExceptionStateAssertionChecker::throwSecurityError(const String&,
-                                                          const String&) {
-  DCHECK_AT(false, m_file, m_line) << "SecurityError should not be thrown.";
-}
-
-void NoExceptionStateAssertionChecker::throwTypeError(const String&) {
-  DCHECK_AT(false, m_file, m_line) << "TypeError should not be thrown.";
-}
-
-void NoExceptionStateAssertionChecker::rethrowV8Exception(
-    v8::Local<v8::Value>) {
-  DCHECK_AT(false, m_file, m_line) << "An exception should not be rethrown.";
-}
-
-#endif
-
-}  // namespace blink