Remove static_cast<base::MessageLoopForUI*> from aw_contents_client_bridge.cc.

android_webview/native/aw_contents_client_bridge.cc

Index: android_webview/native/aw_contents_client_bridge.cc
diff --git a/android_webview/native/aw_contents_client_bridge.cc b/android_webview/native/aw_contents_client_bridge.cc
index 76eebf9e0c375332a641b3453de1b597d32f7c1d..059ba3633f5e7a62d3703217dd1dd1c65ee230c2 100644
--- a/android_webview/native/aw_contents_client_bridge.cc
+++ b/android_webview/native/aw_contents_client_bridge.cc
@@ -357,7 +357,7 @@ bool AwContentsClientBridge::ShouldOverrideUrlLoading(const base::string16& url,
     // Tell the chromium message loop to not perform any tasks after the current
     // one - we want to make sure we return to Java cleanly without first making
     // any new JNI calls.
-    static_cast<base::MessageLoopForUI*>(base::MessageLoop::current())->Abort();
+    base::MessageLoopForUI::current()->Abort();
     // If we crashed we don't want to continue the navigation.
     return true;
   }