Sync MDP: implement MemoryDumpProvider

sql/connection.cc

Index: sql/connection.cc
diff --git a/sql/connection.cc b/sql/connection.cc
index 073b032cde62157b69a91512a357ce450eb1e4d5..8c6c8f17474212f93bcb134881c8456a9a23992a 100644
--- a/sql/connection.cc
+++ b/sql/connection.cc
@@ -1989,6 +1989,12 @@ bool Connection::IntegrityCheckHelper(
   return ret;
 }
 
+bool Connection::ReportMemoryUsage(
+    base::trace_event::MemoryAllocatorDump* mad) {
+  return memory_dump_provider_ &&
+      memory_dump_provider_->ReportMemoryUsage(mad);
+}
+
 base::TimeTicks TimeSource::Now() {
   return base::TimeTicks::Now();
 }