WebView: RegisterNativesImpl() returns bool; don't compare it for >= 0.

android_webview/native/aw_contents_client_bridge.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "android_webview/native/aw_contents_client_bridge.h"
 
 #include "android_webview/common/devtools_instrumentation.h"
 #include "base/android/jni_android.h"
 #include "base/android/jni_array.h"
 #include "base/android/jni_string.h"
@@ skipping 189 matching lines @@
       pending_js_dialog_callbacks_.Lookup(id);
   if (!callback) {
     LOG(WARNING) << "Unexpected JS dialog cancel. " << id;
     return;
   }
   callback->Run(false, base::string16());
   pending_js_dialog_callbacks_.Remove(id);
 }
 
 bool RegisterAwContentsClientBridge(JNIEnv* env) {
-  return RegisterNativesImpl(env) >= 0;
+  return RegisterNativesImpl(env);
 }
 
 }  // namespace android_webview