https://bugs.webkit.org/show_bug.cgi?id=86305

Reviewed by Darin Adler.

Use emptyString() instead of String("") because it is better style and faster.

No new tests. No change in behavior.

* Modules/webdatabase/AbstractDatabase.cpp:
(WebCore::AbstractDatabase::performOpenAndVerify):
* Modules/websockets/ThreadableWebSocketChannelClientWrapper.cpp:
(WebCore::ThreadableWebSocketChannelClientWrapper::subprotocol):
(WebCore::ThreadableWebSocketChannelClientWrapper::extensions):
* html/HTMLInputElement.cpp:
(WebCore::HTMLInputElement::setValueFromRenderer):
* platform/SharedBufferChunkReader.cpp:
(WebCore::SharedBufferChunkReader::nextChunkAsUTF8StringWithLatin1Fallback):
* platform/network/curl/ResourceHandleManager.cpp:
(WebCore::ResourceHandleManager::setProxyInfo):
* platform/text/LocaleICU.cpp:
(WebCore::LocaleICU::initializeLocalizedDateFormatText):
* rendering/RenderQuote.cpp:
(WebCore::RenderQuote::originalText):
* storage/StorageNamespaceImpl.cpp:
(WebCore::StorageNamespaceImpl::localStorageNamespace):
* svg/SVGStringList.cpp:
(WebCore::SVGStringList::reset):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@116908 268f45cc-cd09-0410-ab3c-d52691b4dbfc