Allow dumping raw json fetched from the server.

components/ntp_snippets/ntp_snippets_service.cc

 // Copyright 2015 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.
 
 #include "components/ntp_snippets/ntp_snippets_service.h"
 
 #include <algorithm>
 #include <iterator>
 #include <utility>
 
@@ skipping 330 matching lines @@
 
   FetchSnippetsFromHosts(hosts);
 }
 
 void NTPSnippetsService::OnSnippetsDownloaded(
     const std::string& snippets_json, const std::string& status) {
 
   if (!snippets_json.empty()) {
     DCHECK(status.empty());
 
+    last_fetch_json_ = snippets_json;
+
     parse_json_callback_.Run(
         snippets_json,
         base::Bind(&NTPSnippetsService::OnJsonParsed,
                    weak_ptr_factory_.GetWeakPtr(), snippets_json),
         base::Bind(&NTPSnippetsService::OnJsonError,
                    weak_ptr_factory_.GetWeakPtr(), snippets_json));
   } else {
     last_fetch_status_ = status;
     LoadingSnippetsFinished();
   }
@@ skipping 55 matching lines @@
           snippet->publish_date() +
           base::TimeDelta::FromMinutes(kDefaultExpiryTimeMins));
     }
   }
 
   // Insert the new snippets at the front.
   snippets_.insert(snippets_.begin(),
                    std::make_move_iterator(new_snippets.begin()),
                    std::make_move_iterator(new_snippets.end()));
 
-  // If there are more snippets now than we want to show, drop the extra ones
-  // from the end of the list.
-  if (snippets_.size() > kMaxSnippetCount)
-    snippets_.resize(kMaxSnippetCount);
-
   return true;
 }
 
 void NTPSnippetsService::LoadSnippetsFromPrefs() {
   bool success = LoadFromListValue(*pref_service_->GetList(prefs::kSnippets));
   DCHECK(success) << "Failed to parse snippets from prefs";
 
   LoadingSnippetsFinished();
 }
 
@@ skipping 37 matching lines @@
 void NTPSnippetsService::LoadingSnippetsFinished() {
   // Remove expired snippets.
   base::Time expiry = base::Time::Now();
 
   snippets_.erase(
       std::remove_if(snippets_.begin(), snippets_.end(),
                      [&expiry](const std::unique_ptr<NTPSnippet>& snippet) {
                        return snippet->expiry_date() <= expiry;
                      }),
       snippets_.end());
+
+  // If there are more snippets now than we want to show, drop the extra ones
+  // from the end of the list.
+  if (snippets_.size() > kMaxSnippetCount)
+    snippets_.resize(kMaxSnippetCount);
+
   StoreSnippetsToPrefs();
 
   discarded_snippets_.erase(
       std::remove_if(discarded_snippets_.begin(), discarded_snippets_.end(),
                      [&expiry](const std::unique_ptr<NTPSnippet>& snippet) {
                        return snippet->expiry_date() <= expiry;
                      }),
       discarded_snippets_.end());
   StoreDiscardedSnippetsToPrefs();
 
@@ skipping 16 matching lines @@
     if (snippet->expiry_date() < next_expiry)
       next_expiry = snippet->expiry_date();
   }
   DCHECK_GT(next_expiry, expiry);
   expiry_timer_.Start(FROM_HERE, next_expiry - expiry,
                       base::Bind(&NTPSnippetsService::LoadingSnippetsFinished,
                                  base::Unretained(this)));
 }
 
 }  // namespace ntp_snippets