Introducing the activityLogPrivate.deleteActivities() API call.

chrome/browser/extensions/activity_log/fullstream_ui_policy.cc

Index: chrome/browser/extensions/activity_log/fullstream_ui_policy.cc
diff --git a/chrome/browser/extensions/activity_log/fullstream_ui_policy.cc b/chrome/browser/extensions/activity_log/fullstream_ui_policy.cc
index b2a6737a2bb9d72ac120413209bc5e6d2d30a3ef..d44f62646039908c90f79a0f12c9ad680ab9f5d0 100644
--- a/chrome/browser/extensions/activity_log/fullstream_ui_policy.cc
+++ b/chrome/browser/extensions/activity_log/fullstream_ui_policy.cc
@@ -220,6 +220,63 @@ scoped_ptr<Action::ActionVector> FullStreamUIPolicy::DoReadFilteredData(
   return actions.Pass();
 }
 
+void FullStreamUIPolicy::DoRemoveActions(const std::vector<int64>& action_ids) {
+  if (action_ids.empty())
+    return;
+
+  sql::Connection* db = GetDatabaseConnection();
+  if (!db) {
+    LOG(ERROR) << "Unable to connect to database";
+    return;
+  }
+
+  // Flush data first so the activity removal affects queued-up data as well.
+  activity_database()->AdviseFlush(ActivityDatabase::kFlushImmediately);
+
+  int batch_size = 50;
+  int iter = action_ids.size() / batch_size;
+  for (int i = 0; i < iter; i++) {
+    int start = i * batch_size;
+    int end = start + batch_size;
+    std::string rowid_set;
+    for (int j = start; j < end; j++) {
+      rowid_set += "?,";
+    }
+    // Delete the last comma from the set.
+    rowid_set = rowid_set.substr(0, rowid_set.length() - 1);
+    std::string query_str = base::StringPrintf(
+        "DELETE FROM %s WHERE rowid in (%s)", kTableName, rowid_set.c_str());
+    sql::Statement query(db->GetUniqueStatement(query_str.c_str()));
+    for (int j = start; j < end; j++) {
+      query.BindInt64(j - start, action_ids[j]);
+    }
+    if (!query.Run()) {
+      LOG(ERROR) << "Removing activities from database failed: "
+                 << query.GetSQLStatement();
+      return;
+    }
+  }
+  int start = iter * batch_size;
+  int end = action_ids.size();
+  std::string rowid_set;
+  for (int i = start; i < end; i++) {
+    rowid_set += "?,";
+  }
+  // Delete the last comma from the set.
+  rowid_set = rowid_set.substr(0, rowid_set.length() - 1);
+  std::string query_str = base::StringPrintf(
+      "DELETE FROM %s WHERE rowid in (%s)", kTableName, rowid_set.c_str());
+  sql::Statement query(db->GetUniqueStatement(query_str.c_str()));
+  for (int i = start; i < end; i++) {
+    query.BindInt64(i - start, action_ids[i]);
+  }
+  if (!query.Run()) {
+    LOG(ERROR) << "Removing activities from database failed: "
+               << query.GetSQLStatement();
+    return;
+  }
+}
+
 void FullStreamUIPolicy::DoRemoveURLs(const std::vector<GURL>& restrict_urls) {
   sql::Connection* db = GetDatabaseConnection();
   if (!db) {
@@ -374,6 +431,10 @@ void FullStreamUIPolicy::ReadFilteredData(
       callback);
 }
 
+void FullStreamUIPolicy::RemoveActions(const std::vector<int64>& action_ids) {
+  ScheduleAndForget(this, &FullStreamUIPolicy::DoRemoveActions, action_ids);
+}
+
 void FullStreamUIPolicy::RemoveURLs(const std::vector<GURL>& restrict_urls) {
   ScheduleAndForget(this, &FullStreamUIPolicy::DoRemoveURLs, restrict_urls);
 }