Move heapprofd into perfetto::profiling namespace.

Change-Id: Ic6310fc8f80f9d645c55e6bf13395f0e0bb79bf3
diff --git a/src/profiling/memory/wire_protocol.cc b/src/profiling/memory/wire_protocol.cc
index c7e441d..2ef5b41 100644
--- a/src/profiling/memory/wire_protocol.cc
+++ b/src/profiling/memory/wire_protocol.cc
@@ -24,6 +24,7 @@
 #include <sys/types.h>
 
 namespace perfetto {
+namespace profiling {
 
 namespace {
 template <typename T>
@@ -104,4 +105,5 @@
   return true;
 }
 
+}  // namespace profiling
 }  // namespace perfetto