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// Copyright 2020 Google LLC
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#import <Foundation/Foundation.h>
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NS_ASSUME_NONNULL_BEGIN
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/** This class manages all the screen traces. If initialized, it records the total frames, frozen
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* frames and slow frames, and if it has been registered as a delegate of FIRAScreenViewReporter,
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* it also automatically creates screen traces for each UIViewController.
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*/
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NS_EXTENSION_UNAVAILABLE("Firebase Performance is not supported for extensions.")
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@interface FPRScreenTraceTracker : NSObject
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/** Singleton instance of FPRScreenTraceTracker.
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*
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* @return The shared instance of FPRScreenTraceTracker.
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*/
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+ (instancetype)sharedInstance;
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@end
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NS_ASSUME_NONNULL_END
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