Issue 501916 : Add data type counts to profile deletion flow

components/history/core/browser/history_service.cc

Index: components/history/core/browser/history_service.cc
diff --git a/components/history/core/browser/history_service.cc b/components/history/core/browser/history_service.cc
index 2fc48f5af41090f9c70572c1f16fda31753e1266..ee6c58486bb08c9fdc21e3c0f943aeb6c2d01d33 100644
--- a/components/history/core/browser/history_service.cc
+++ b/components/history/core/browser/history_service.cc
@@ -655,6 +655,19 @@ base::CancelableTaskTracker::TaskId HistoryService::QueryURL(
                  base::Owned(query_url_result)));
 }
 
+// Statistics ------------------------------------------------------------------
+base::CancelableTaskTracker::TaskId HistoryService::CountURLs(
+    const CountURLsCallback& callback,

[lwchkg, 2015/08/11 15:54:51]

Suggest to rename to GetHistoryCount. Mike and James. Any comments?

[Mike Lerman, 2015/08/13 14:56:33]

GetHistoryCount or GetCountHistoryEntries (or similar) are my leanings.

+    base::CancelableTaskTracker* tracker) {
+  DCHECK(thread_) << "History service being called after cleanup";
+  DCHECK(thread_checker_.CalledOnValidThread());
+
+  return tracker->PostTaskAndReplyWithResult(
+      thread_->task_runner().get(), FROM_HERE,
+      base::Bind(&HistoryBackend::CountURLs, history_backend_.get()),
+      callback);
+}
+
 // Downloads -------------------------------------------------------------------
 
 // Handle creation of a download by creating an entry in the history service's