Don't use CF types in the new C API

Reviewed by Anders Carlsson.

Replace all uses of CF types in the C API.
- Replace CFStringRef with WKStringRef.
- Replace CFURLRef with WKURLRef.

* WebKit2.xcodeproj/project.pbxproj: Add new files.

* Shared/KURLWrapper.h: Added. RefCounted wrapper around KURL.
* UIProcess/API/C/WKAPICast.h: Add new conversions.
* UIProcess/API/C/WKBase.h: Add new types.
* UIProcess/API/C/WKFrame.cpp:
* UIProcess/API/C/WKFrame.h: 
* UIProcess/API/C/WKPage.cpp:
* UIProcess/API/C/WKPage.h:
Replace uses of CF types with WK equivalents.

* UIProcess/API/C/WKString.cpp: Added.
* UIProcess/API/C/WKString.h: Added.
Represents a WebCore::StringImpl*.

* UIProcess/API/C/WKURL.cpp: Added.
* UIProcess/API/C/WKURL.h: Added.
Represents a WebKit::KURLWrapper*.

* UIProcess/API/C/cf: Added.
* UIProcess/API/C/cf/WKStringCF.cpp: Added.
* UIProcess/API/C/cf/WKStringCF.h: Added.
* UIProcess/API/C/cf/WKURLCF.cpp: Added.
* UIProcess/API/C/cf/WKURLCF.h: Added.
CoreFoundation conversion files. Allows converting
 WKStringRef <-> CFStringRef
 WKURLRef <-> CFURLRef

* UIProcess/ScriptReturnValueCallback.cpp:
(WebKit::ScriptReturnValueCallback::performCallbackWithReturnValue):
* UIProcess/ScriptReturnValueCallback.h:
* UIProcess/WebFrameProxy.cpp:
(WebKit::WebFrameProxy::didStartProvisionalLoad):
(WebKit::WebFrameProxy::didCommitLoad):
* UIProcess/WebFrameProxy.h:
(WebKit::WebFrameProxy::url):
(WebKit::WebFrameProxy::provisionalURL):
* UIProcess/WebLoaderClient.cpp:
(WebKit::WebLoaderClient::didReceiveTitleForFrame):
* UIProcess/WebLoaderClient.h:
* UIProcess/WebPageProxy.cpp:
(WebKit::WebPageProxy::close):
(WebKit::WebPageProxy::didReceiveTitleForFrame):
(WebKit::WebPageProxy::decidePolicyForNavigationAction):
(WebKit::WebPageProxy::decidePolicyForNewWindowAction):
(WebKit::WebPageProxy::decidePolicyForMIMEType):
(WebKit::WebPageProxy::runJavaScriptAlert):
(WebKit::WebPageProxy::didRunJavaScriptInMainFrame):
(WebKit::WebPageProxy::processDidExit):
* UIProcess/WebPageProxy.h:
(WebKit::WebPageProxy::pageTitle):
(WebKit::WebPageProxy::urlAtProcessExit):
* UIProcess/WebPolicyClient.cpp:
(WebKit::WebPolicyClient::decidePolicyForNavigationAction):
(WebKit::WebPolicyClient::decidePolicyForNewWindowAction):
(WebKit::WebPolicyClient::decidePolicyForMIMEType):
* UIProcess/WebPolicyClient.h:
* UIProcess/WebUIClient.cpp:
(WebKit::WebUIClient::runJavaScriptAlert):
* UIProcess/WebUIClient.h:
Don't use CF types internally at all.

* WebProcess/WebCoreSupport/WebFrameLoaderClient.cpp:
(WebKit::WebFrameLoaderClient::frameLoaderDestroyed):
Fix typo.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@57352 268f45cc-cd09-0410-ab3c-d52691b4dbfc