jni_generator: Pass object parameters as JavaParamRef.

ui/gfx/android/view_configuration.cc

 // Copyright 2014 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 "ui/gfx/android/view_configuration.h"
 
 #include "base/android/jni_android.h"
 #include "base/lazy_instance.h"
 #include "base/threading/non_thread_safe.h"
 #include "jni/ViewConfigurationHelper_jni.h"
@@ skipping 125 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(ViewConfigurationData);
 };
 
 // Leaky to allow access from any thread.
 base::LazyInstance<ViewConfigurationData>::Leaky g_view_configuration =
     LAZY_INSTANCE_INITIALIZER;
 
 }  // namespace
 
 static void UpdateSharedViewConfiguration(JNIEnv* env,
-                                          jobject obj,
+                                          const JavaParamRef<jobject>& obj,
                                           jfloat maximum_fling_velocity,
                                           jfloat minimum_fling_velocity,
                                           jfloat touch_slop,
                                           jfloat double_tap_slop,
                                           jfloat min_scaling_span,
                                           jfloat min_scaling_touch_major) {
   g_view_configuration.Get().SynchronizedUpdate(
       maximum_fling_velocity, minimum_fling_velocity, touch_slop,
       double_tap_slop, min_scaling_span, min_scaling_touch_major);
 }
@@ skipping 36 matching lines @@
 
 int ViewConfiguration::GetMinScalingTouchMajorInDips() {
   return g_view_configuration.Get().min_scaling_touch_major_in_dips();
 }
 
 bool ViewConfiguration::RegisterViewConfiguration(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace gfx