Remove now-unnecessary .obj() in Java method calls.

content/common/android/hash_set.cc

Index: content/common/android/hash_set.cc
diff --git a/content/common/android/hash_set.cc b/content/common/android/hash_set.cc
index 2b140375abb19cfa4a9edb0df1fdfd26dc6261f0..4e6839b7cb3b88809445783fa4cd514e9ee43afc 100644
--- a/content/common/android/hash_set.cc
+++ b/content/common/android/hash_set.cc
@@ -9,18 +9,18 @@ namespace content {
 void JNI_Java_HashSet_add(JNIEnv* env,
                           const base::android::JavaRef<jobject>& hash_set,
                           const base::android::JavaRef<jobject>& object) {
-  JNI_HashSet::Java_HashSet_add(env, hash_set.obj(), object.obj());
+  JNI_HashSet::Java_HashSet_add(env, hash_set, object);
 }
 
 void JNI_Java_HashSet_remove(JNIEnv* env,
                              const base::android::JavaRef<jobject>& hash_set,
                              const base::android::JavaRef<jobject>& object) {
-  JNI_HashSet::Java_HashSet_remove(env, hash_set.obj(), object.obj());
+  JNI_HashSet::Java_HashSet_remove(env, hash_set, object);
 }
 
 void JNI_Java_HashSet_clear(JNIEnv* env,
                             const base::android::JavaRef<jobject>& hash_set) {
-  JNI_HashSet::Java_HashSet_clear(env, hash_set.obj());
+  JNI_HashSet::Java_HashSet_clear(env, hash_set);
 }
 
 }  // namespace content