Add atom for per-process system ion heap size

The pulling code will be added in the next commit.

Bug: 130526489
Test: statsd_testdrive
Change-Id: I0fea4b6a7a8dbbdc574fb342c1e07aa0165bf797
diff --git a/cmds/statsd/src/external/StatsPullerManager.cpp b/cmds/statsd/src/external/StatsPullerManager.cpp
index 914d60d..475f18a 100644
--- a/cmds/statsd/src/external/StatsPullerManager.cpp
+++ b/cmds/statsd/src/external/StatsPullerManager.cpp
@@ -156,6 +156,9 @@
         // system_ion_heap_size
         {android::util::SYSTEM_ION_HEAP_SIZE,
          {.puller = new StatsCompanionServicePuller(android::util::SYSTEM_ION_HEAP_SIZE)}},
+        // process_system_ion_heap_size
+        {android::util::PROCESS_SYSTEM_ION_HEAP_SIZE,
+         {.puller = new StatsCompanionServicePuller(android::util::PROCESS_SYSTEM_ION_HEAP_SIZE)}},
         // temperature
         {android::util::TEMPERATURE,
          {.puller = new StatsCompanionServicePuller(android::util::TEMPERATURE)}},