Use a forward declaration of RSAPrivateKey in crypto/signature_creator.h.

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BUG=none
TEST=no compilation errors

Review URL: http://codereview.chromium.org/9348001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@120872 0039d316-1c4b-4281-b951-d872f2087c98
6 files changed