[Mac] Placate Clang's (pedantic) warning about CrTrackingArea's initializer.

chrome/browser/ui/cocoa/tracking_area_unittest.mm

Index: chrome/browser/ui/cocoa/tracking_area_unittest.mm
diff --git a/chrome/browser/ui/cocoa/tracking_area_unittest.mm b/chrome/browser/ui/cocoa/tracking_area_unittest.mm
index 151d03365554f142bf5d69382aab3a8c615898a0..2ff125dc672e2cf516119614c1f870bbeb5e2d8a 100644
--- a/chrome/browser/ui/cocoa/tracking_area_unittest.mm
+++ b/chrome/browser/ui/cocoa/tracking_area_unittest.mm
@@ -30,7 +30,7 @@ class CrTrackingAreaTest : public CocoaTest {
         trackingArea_([[CrTrackingArea alloc]
             initWithRect:NSMakeRect(0, 0, 100, 100)
                  options:NSTrackingMouseMoved | NSTrackingActiveInKeyWindow
-                   owner:owner_.get()
+            proxiedOwner:owner_.get()
                 userInfo:nil]) {
   }