Remove PLATFORM(BLACKBERRY) support.

Source/WebCore/platform/network/ResourceHandleInternal.h

Index: Source/WebCore/platform/network/ResourceHandleInternal.h
diff --git a/Source/WebCore/platform/network/ResourceHandleInternal.h b/Source/WebCore/platform/network/ResourceHandleInternal.h
index e8c4eeb0925a35e05a6b24267d016d2f5229ff6a..6a1bce0670088a8f4a1bddd759968384fd6a484e 100644
--- a/Source/WebCore/platform/network/ResourceHandleInternal.h
+++ b/Source/WebCore/platform/network/ResourceHandleInternal.h
@@ -224,13 +224,6 @@ namespace WebCore {
         NSURLAuthenticationChallenge *m_currentMacChallenge;
 #endif
         AuthenticationChallenge m_currentWebChallenge;
-#if PLATFORM(BLACKBERRY)
-        // We need to store the credentials for host and proxy separately for the platform
-        // networking layer. One of these will always be equal to m_currentWebChallenge.
-        AuthenticationChallenge m_hostWebChallenge;
-        AuthenticationChallenge m_proxyWebChallenge;
-#endif
-
         ResourceHandle::FailureType m_scheduledFailureType;
         Timer<ResourceHandle> m_failureTimer;
     };