Fix Mail after 278564@main

https://bugs.webkit.org/show_bug.cgi?id=273955
rdar://127819455

Reviewed by Brady Eidson.

Mail uses WKObjCTypeWrapperGetObject which of course has 0 tests.
It expected an ObjCObjectGraph, but I'm now giving it an API::Data.
Make it handle an API::Data.

* Source/WebKit/Shared/API/c/mac/WKObjCTypeWrapperRef.mm:
(WKObjCTypeWrapperGetObject):
* Tools/TestWebKitAPI/Tests/WebKitCocoa/BundleParameters.mm:
(TEST(WebKit, LoadDataWithUserData)):
* Tools/TestWebKitAPI/Tests/WebKitCocoa/BundleParametersPlugIn.mm:
(-[BundleParametersPlugIn webProcessPlugIn:didCreateBrowserContextController:]):

Canonical link: https://commits.webkit.org/278579@main

Source/WebKit/Shared/API/c/mac/WKObjCTypeWrapperRef.mm

@@ -27,7 +27,10 @@
 #import "WKObjCTypeWrapperRef.h"
 
 #import "ObjCObjectGraph.h"
+#import "WKData.h"
+#import "WKNSData.h"
 #import "WKSharedAPICast.h"
+#import "WKType.h"
 
 WKTypeID WKObjCTypeWrapperGetTypeID()
 {
@@ -36,5 +39,7 @@ WKTypeID WKObjCTypeWrapperGetTypeID()
 
 id WKObjCTypeWrapperGetObject(WKObjCTypeWrapperRef wrapperRef)
 {
+    if (wrapperRef && WKGetTypeID(wrapperRef) == WKDataGetTypeID())
+        return WebKit::wrapper(WebKit::toImpl((WKDataRef)wrapperRef));
     return WebKit::toImpl(wrapperRef)->rootObject();
 }

Tools/TestWebKitAPI/Tests/WebKitCocoa/BundleParameters.mm

@@ -28,8 +28,10 @@
 #import "DeprecatedGlobalValues.h"
 #import "PlatformUtilities.h"
 #import "Test.h"
+#import "TestNavigationDelegate.h"
 #import "WKWebViewConfigurationExtras.h"
 #import <WebKit/WKProcessPoolPrivate.h>
+#import <WebKit/WKWebViewPrivate.h>
 #import <wtf/RetainPtr.h>
 
 TEST(WebKit, BundleParameters)
@@ -110,3 +112,12 @@
         TestWebKitAPI::Util::run(&isDone);
     }
 }
+
+TEST(WebKit, LoadDataWithUserData)
+{
+    NSString * const testPlugInClassName = @"BundleParametersPlugIn";
+    auto configuration = retainPtr([WKWebViewConfiguration _test_configurationWithTestPlugInClassName:testPlugInClassName]);
+    auto webView = adoptNS([[WKWebView alloc] initWithFrame:CGRectZero configuration:configuration.get()]);
+    [webView _loadData:NSData.data MIMEType:@"text/html" characterEncodingName:@"utf-8" baseURL:[NSURL URLWithString:@"https://webkit.org/"] userData:NSData.data];
+    [webView _test_waitForDidFinishNavigation];
+}

Tools/TestWebKitAPI/Tests/WebKitCocoa/BundleParametersPlugIn.mm

@@ -32,6 +32,13 @@
 #import <WebKit/WKWebProcessPlugInScriptWorld.h>
 #import <wtf/RetainPtr.h>
 
+#if WK_HAVE_C_SPI
+#import <WebKit/WKBundlePage.h>
+#import <WebKit/WKBundlePageLoaderClient.h>
+#import <WebKit/WKObjCTypeWrapperRef.h>
+#import <WebKit/WKType.h>
+#endif
+
 static NSString * const testParameter1 = @"TestParameter1";
 static NSString * const testParameter2 = @"TestParameter2";
 
@@ -52,6 +59,16 @@ - (void)webProcessPlugIn:(WKWebProcessPlugInController *)plugInController didCre
     [plugInController.parameters addObserver:self forKeyPath:testParameter1 options:NSKeyValueObservingOptionInitial context:NULL];
     [plugInController.parameters addObserver:self forKeyPath:testParameter2 options:NSKeyValueObservingOptionInitial context:NULL];
     [plugInController.parameters addObserver:self forKeyPath:TestWebKitAPI::Util::TestPlugInClassNameParameter options:NSKeyValueObservingOptionInitial context:NULL];
+
+#if WK_HAVE_C_SPI
+    WKBundlePageLoaderClientV6 loaderClient = { };
+    loaderClient.base.version = 6;
+    loaderClient.willLoadDataRequest = [] (WKBundlePageRef page, WKURLRequestRef, WKDataRef, WKStringRef, WKStringRef, WKURLRef, WKTypeRef userData, const void*) {
+        id data = WKObjCTypeWrapperGetObject((WKObjCTypeWrapperRef)userData);
+        RELEASE_ASSERT([data isKindOfClass:NSData.class]);
+    };
+    WKBundlePageSetPageLoaderClient(static_cast<WKBundlePageRef>(browserContextController), &loaderClient.base);
+#endif
 }
 
 - (void)dealloc