Remove null checking in JavaObjectWeakGlobalRef ctr

base/android/jni_weak_ref.cc

Index: base/android/jni_weak_ref.cc
diff --git a/base/android/jni_weak_ref.cc b/base/android/jni_weak_ref.cc
index 53a91a8a99918f97a70fcc317e8af0a4f3dbd4f5..fe7ea2e5d3618204eabe7f040d140922b9dc7b34 100644
--- a/base/android/jni_weak_ref.cc
+++ b/base/android/jni_weak_ref.cc
@@ -26,14 +26,12 @@ JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(JavaObjectWeakGlobalRef&& orig)
 
 JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(JNIEnv* env, jobject obj)
     : obj_(env->NewWeakGlobalRef(obj)) {
-  DCHECK(obj_);
 }
 
 JavaObjectWeakGlobalRef::JavaObjectWeakGlobalRef(
     JNIEnv* env,
     const base::android::JavaRef<jobject>& obj)
     : obj_(env->NewWeakGlobalRef(obj.obj())) {
-  DCHECK(obj_);
 }
 
 JavaObjectWeakGlobalRef::~JavaObjectWeakGlobalRef() {