REGRESSION (WebKit2): keygen element doesn't work
        https://bugs.webkit.org/show_bug.cgi?id=56402
        <rdar://problem/9006545>

        Covered by existing regresison tests.

        * English.lproj/Localizable.strings:

        * WebCore.exp.in: Removed WebCoreKeyGenerator, which no longer exists. Added
        _wkSignedPublicKeyAndChallengeString, so that this WKSI function could be used in WebCore.

        * platform/mac/SSLKeyGeneratorMac.mm: Removed.
        * platform/mac/WebCoreKeyGenerator.h: Removed.
        * platform/mac/WebCoreKeyGenerator.m: Removed.
        * platform/mac/WebCoreSystemInterface.h:
        * platform/mac/WebCoreSystemInterface.mm:
        * WebCore.xcodeproj/project.pbxproj:
        Renamed SSLKeyGeneratorMac.mm to .cpp, as it doesn't use any Objective C any more.
        Removed WebCoreKeyGenerator, as we no longer need an interface to WebKit.

        * platform/LocalizationStrategy.h:
        * platform/LocalizedStrings.cpp:
        (WebCore::keygenMenuItem512):
        (WebCore::keygenMenuItem1024):
        (WebCore::keygenMenuItem2048):
        (WebCore::keygenKeychainItemName):
        * platform/LocalizedStrings.h:
        Added strings used by keygen element, now that the code using them is in WebCore.

        * platform/mac/SSLKeyGeneratorMac.cpp: Copied from Source/WebCore/platform/mac/SSLKeyGeneratorMac.mm.
        (WebCore::getSupportedKeySizes):
        (WebCore::signedPublicKeyAndChallengeString):
        Moved the code from WebKit. There is never any need to provide implementation at runtime,
        like old code was doing.

        * platform/win/SSLKeyGeneratorWin.cpp: (WebCore::WebCore::getSupportedKeySizes):
        Added a FIXME about localization. Note that Safari for Windows doesn't support keygen.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@81173 268f45cc-cd09-0410-ab3c-d52691b4dbfc