Enable noexcept on Windows, use for a few move constructors.

base/android/jni_weak_ref.h

Index: base/android/jni_weak_ref.h
diff --git a/base/android/jni_weak_ref.h b/base/android/jni_weak_ref.h
index 223c47b2a2a5bd2fd10d392b0e2517a61ebb6267..43a26b5fe5732cfdebc0a8890faf2c807779060c 100644
--- a/base/android/jni_weak_ref.h
+++ b/base/android/jni_weak_ref.h
@@ -18,7 +18,7 @@ class BASE_EXPORT JavaObjectWeakGlobalRef {
  public:
   JavaObjectWeakGlobalRef();
   JavaObjectWeakGlobalRef(const JavaObjectWeakGlobalRef& orig);
-  JavaObjectWeakGlobalRef(JavaObjectWeakGlobalRef&& orig);
+  JavaObjectWeakGlobalRef(JavaObjectWeakGlobalRef&& orig) noexcept;
   JavaObjectWeakGlobalRef(JNIEnv* env, jobject obj);
   JavaObjectWeakGlobalRef(JNIEnv* env,
                           const base::android::JavaRef<jobject>& obj);