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diff --git a/Firebase/Storage/Public/FIRStorageObservableTask.h b/Firebase/Storage/Public/FIRStorageObservableTask.h
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+++ b/Firebase/Storage/Public/FIRStorageObservableTask.h
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+/*
+ * Copyright 2017 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "FIRStorageSwiftNameSupport.h"
+#import "FIRStorageTask.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class FIRStorageReference;
+@class FIRStorageTaskSnapshot;
+
+/**
+ * Extends FIRStorageTask to provide observable semantics such as adding and removing observers.
+ * Observers produce a FIRStorageHandle, which is used to keep track of and remove specific
+ * observers at a later date.
+ * This class is currently not thread safe and can only be called on the main thread.
+ */
+FIR_SWIFT_NAME(StorageObservableTask)
+@interface FIRStorageObservableTask : FIRStorageTask
+
+/**
+ * Observes changes in the upload status: Resume, Pause, Progress, Success, and Failure.
+ * @param status The FIRStorageTaskStatus change to observe.
+ * @param handler A callback that fires every time the status event occurs,
+ * returns a FIRStorageTaskSnapshot containing the state of the task.
+ * @return A task handle that can be used to remove the observer at a later date.
+ */
+- (FIRStorageHandle)observeStatus:(FIRStorageTaskStatus)status
+                          handler:(void (^)(FIRStorageTaskSnapshot *snapshot))handler;
+
+/**
+ * Removes the single observer with the provided handle.
+ * @param handle The handle of the task to remove.
+ */
+- (void)removeObserverWithHandle:(FIRStorageHandle)handle;
+
+/**
+ * Removes all observers for a single status.
+ * @param status A FIRStorageTaskStatus to remove listeners for.
+ */
+- (void)removeAllObserversForStatus:(FIRStorageTaskStatus)status;
+
+/**
+ * Removes all observers.
+ */
+- (void)removeAllObservers;
+
+@end
+
+NS_ASSUME_NONNULL_END