Reland of [Memory UMA] Return the extra_processes_dump map as part of the ResponseCallback

services/resource_coordinator/public/interfaces/memory/memory_instrumentation.mojom

Index: services/resource_coordinator/public/interfaces/memory/memory_instrumentation.mojom
diff --git a/services/resource_coordinator/public/interfaces/memory/memory_instrumentation.mojom b/services/resource_coordinator/public/interfaces/memory/memory_instrumentation.mojom
index 12244c62ba2215a2416e2f32dd6cbb4374d5ae19..80978bc861e3bfabc095f62d979872cd2e5c30d7 100644
--- a/services/resource_coordinator/public/interfaces/memory/memory_instrumentation.mojom
+++ b/services/resource_coordinator/public/interfaces/memory/memory_instrumentation.mojom
@@ -3,6 +3,8 @@
 // found in the LICENSE file.
 
 module memory_instrumentation.mojom;
+
+import "mojo/common/process_id.mojom";
 
 enum DumpType {
   PERIODIC_INTERVAL,
@@ -36,7 +38,8 @@
 struct MemoryDumpCallbackResult {
   OSMemDump os_dump;
   ChromeMemDump chrome_dump;
-}; 
+  map<mojo.common.mojom.ProcessId, OSMemDump> extra_processes_dump;
+};
 
 // There should be at most one implementation of this interface per process.
 interface ProcessLocalDumpManager {