Add MemoryCoordinator

components/memory_coordinator/browser/BUILD.gn

Index: components/memory_coordinator/browser/BUILD.gn
diff --git a/components/memory_coordinator/common/BUILD.gn b/components/memory_coordinator/browser/BUILD.gn
similarity index 60%
copy from components/memory_coordinator/common/BUILD.gn
copy to components/memory_coordinator/browser/BUILD.gn
index 950b137bda542075983ebf5e7355b2bf0900529c..49f68633d0a6d8099a9618599b2a9008af253739 100644
--- a/components/memory_coordinator/common/BUILD.gn
+++ b/components/memory_coordinator/browser/BUILD.gn
@@ -2,12 +2,15 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-source_set("common") {
+source_set("browser") {
   sources = [
-    "memory_coordinator_client.h",
+    "memory_state_notifier.cc",
+    "memory_state_notifier.h",
   ]
 
-  public_deps = [
+  deps = [
+    "//base",
+    "//components/memory_coordinator/common",
     "//components/memory_coordinator/public/interfaces",
   ]
 }