Revert "[PageLoadMetrics] Keep track of Ad Sizes on Pages"

chrome/browser/page_load_metrics/observers/ads_page_load_metrics_observer.h

Index: chrome/browser/page_load_metrics/observers/ads_page_load_metrics_observer.h
diff --git a/chrome/browser/page_load_metrics/observers/ads_page_load_metrics_observer.h b/chrome/browser/page_load_metrics/observers/ads_page_load_metrics_observer.h
deleted file mode 100644
index 91a95e580a0cb686f833bf1c2077714323b1eeb6..0000000000000000000000000000000000000000
--- a/chrome/browser/page_load_metrics/observers/ads_page_load_metrics_observer.h
+++ /dev/null
@@ -1,82 +0,0 @@
-// Copyright 2017 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_ADS_PAGE_LOAD_METRICS_OBSERVER_H_
-#define CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_ADS_PAGE_LOAD_METRICS_OBSERVER_H_
-
-#include <list>
-#include <map>
-#include <memory>
-
-#include "base/macros.h"
-#include "chrome/browser/page_load_metrics/page_load_metrics_observer.h"
-#include "net/http/http_response_info.h"
-
-class AdsPageLoadMetricsObserver
-    : public page_load_metrics::PageLoadMetricsObserver {
- public:
-  // Returns a new AdsPageLoadMetricObserver. If the feature is disabled it
-  // returns nullptr.
-  static std::unique_ptr<AdsPageLoadMetricsObserver> CreateIfNeeded();
-
-  AdsPageLoadMetricsObserver();
-  ~AdsPageLoadMetricsObserver() override;
-
-  // page_load_metrics::PageLoadMetricsObserver
-  ObservePolicy OnCommit(content::NavigationHandle* navigation_handle) override;
-  ObservePolicy OnDidFinishSubFrameNavigation(
-      content::NavigationHandle* navigation_handle) override;
-  ObservePolicy FlushMetricsOnAppEnterBackground(
-      const page_load_metrics::PageLoadTiming& timing,
-      const page_load_metrics::PageLoadExtraInfo& extra_info) override;
-  void OnLoadedResource(const page_load_metrics::ExtraRequestCompleteInfo&
-                            extra_request_info) override;
-  void OnComplete(const page_load_metrics::PageLoadTiming& timing,
-                  const page_load_metrics::PageLoadExtraInfo& info) override;
-
- private:
-  using FrameTreeNodeId = int;
-
-  struct AdFrameData {
-    explicit AdFrameData(FrameTreeNodeId frame_tree_node_id);
-    size_t frame_bytes;
-    size_t frame_bytes_uncached;
-    const FrameTreeNodeId frame_tree_node_id;
-  };
-
-  void ProcessLoadedResource(
-      const page_load_metrics::ExtraRequestCompleteInfo& extra_request_info);
-  void RecordHistograms();
-
-  // Checks to see if a resource is waiting for a navigation with the given
-  // |frame_tree_node_id| to commit before it can be processed. If so, call
-  // OnLoadedResource for the delayed resource.
-  void ProcessOngoingNavigationResource(FrameTreeNodeId frame_tree_node_id);
-
-  // Stores the size data of each ad frame. Pointed to by ad_frames_ so use a
-  // data structure that won't move the data around.
-  std::list<AdFrameData> ad_frames_data_storage_;
-
-  // Maps a frame (by id) to the AdFrameData responsible for the frame.
-  // Multiple frame ids can point to the same AdFrameData. The responsible
-  // frame is the top-most frame labeled as an ad in the frame's ancestry,
-  // which may be itself. If no responsible frame is found, the data is
-  // nullptr.
-  std::map<FrameTreeNodeId, AdFrameData*> ad_frames_data_;
-
-  // When the observer receives report of a document resource loading for a
-  // sub-frame before the sub-frame commit occurs, hold onto the resource
-  // request info (delay it) until the sub-frame commits.
-  std::map<FrameTreeNodeId, page_load_metrics::ExtraRequestCompleteInfo>
-      ongoing_navigation_resources_;
-
-  size_t page_bytes_ = 0u;
-  size_t uncached_page_bytes_ = 0u;
-  int top_level_subframe_count_ = 0;
-  int top_level_ad_frame_count_ = 0;
-
-  DISALLOW_COPY_AND_ASSIGN(AdsPageLoadMetricsObserver);
-};
-
-#endif  // CHROME_BROWSER_PAGE_LOAD_METRICS_OBSERVERS_ADS_PAGE_LOAD_METRICS_OBSERVER_H_