Add Precache.Fetch.MinWeight UMA.

components/precache/core/precache_fetcher.h

 // Copyright 2013 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 COMPONENTS_PRECACHE_CORE_PRECACHE_FETCHER_H_
 #define COMPONENTS_PRECACHE_CORE_PRECACHE_FETCHER_H_
 
 #include <stdint.h>
 
 #include <deque>
 #include <list>
 #include <memory>
 #include <string>
 #include <vector>
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
+#include "base/optional.h"
 #include "base/single_thread_task_runner.h"
 #include "base/time/time.h"
 #include "components/precache/core/fetcher_pool.h"
 #include "components/precache/core/proto/precache.pb.h"
 #include "components/precache/core/proto/quota.pb.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_fetcher_delegate.h"
 #include "url/gurl.h"
 
 namespace base {
@@ skipping 99 matching lines @@
     // called, then precaching will be canceled and OnDone will not be called.
     virtual void OnDone() = 0;
   };
 
   // Visible for testing.
   class Fetcher;
 
   static void RecordCompletionStatistics(
       const PrecacheUnfinishedWork& unfinished_work,
       size_t remaining_manifest_urls_to_fetch,
-      size_t remaining_resource_urls_to_fetch);
+      size_t remaining_resource_urls_to_fetch,
+      base::Optional<double> min_weight_fetched);
 
   static std::string GetResourceURLBase64HashForTesting(
       const std::vector<GURL>& urls);
 
   // Constructs a new PrecacheFetcher. The |unfinished_work| contains the
   // prioritized list of hosts that the user commonly visits. These hosts are
   // used by a server side component to construct a list of resource URLs that
   // the user is likely to fetch. Takes ownership of |unfinished_work|.
   // |precache_database| should be accessed only in |db_task_runner|.
   PrecacheFetcher(
@@ skipping 22 matching lines @@
   FRIEND_TEST_ALL_PREFIXES(PrecacheFetcherTest,
                            GloballyRankResourcesAfterPauseResume);
   FRIEND_TEST_ALL_PREFIXES(PrecacheFetcherTest, FetcherPoolMaxLimitReached);
   FRIEND_TEST_ALL_PREFIXES(PrecacheFetcherTest,
                            CancelPrecachingAfterAllManifestFetch);
   FRIEND_TEST_ALL_PREFIXES(PrecacheFetcherTest, DailyQuota);
 
   // Notifies the precache delete that precaching is done, and report
   // completion statistics.
   void NotifyDone(size_t remaining_manifest_urls_to_fetch,
-                  size_t remaining_resource_urls_to_fetch);
+                  size_t remaining_resource_urls_to_fetch,
+                  base::Optional<double> min_weight_fetched);
 
   // Fetches the next resource or manifest URL, if any remain. Fetching is done
   // sequentially and depth-first: all resources are fetched for a manifest
   // before the next manifest is fetched. This is done to limit the length of
   // the |resource_urls_to_fetch_| list, reducing the memory usage.
   void StartNextFetch();
 
   void StartNextManifestFetches();
   void StartNextResourceFetch();
 
@@ skipping 163 matching lines @@
   int64_t response_bytes_;
   int64_t network_response_bytes_;
   bool was_cached_;
 
   DISALLOW_COPY_AND_ASSIGN(Fetcher);
 };
 
 }  // namespace precache
 
 #endif  // COMPONENTS_PRECACHE_CORE_PRECACHE_FETCHER_H_