Fix iOS build.

* platform/ios/DragImageIOS.mm:
(WebCore::deleteDragImage):

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@212253 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Author: [email protected]

Source/WebCore/ChangeLog

@@ -1,3 +1,10 @@
+2017-02-13  Anders Carlsson  <[email protected]>
+
+        Fix iOS build.
+
+        * platform/ios/DragImageIOS.mm:
+        (WebCore::deleteDragImage):
+
 2017-02-13  Sam Weinig  <[email protected]>
 
         Rename MediaQueryExp.h/cpp to MediaQueryExpression.h/cpp

Source/WebCore/platform/ios/DragImageIOS.mm

@@ -36,6 +36,12 @@
 
 namespace WebCore {
 
+void deleteDragImage(RetainPtr<CGImageRef>)
+{
+    // Since this is a RetainPtr, there's nothing additional we need to do to
+    // delete it. It will be released when it falls out of scope.
+}
+
 // FIXME: fix signature of dragImageSize() to avoid copying the argument.
 IntSize dragImageSize(RetainPtr<CGImageRef> image)
 {