memory_coordinator: Use component(target) instead of static_library(target)

components/memory_coordinator/browser/BUILD.gn

Index: components/memory_coordinator/browser/BUILD.gn
diff --git a/components/memory_coordinator/browser/BUILD.gn b/components/memory_coordinator/browser/BUILD.gn
index fed499dad5d680329c802fe0c127e8996d04f0ef..c4ac3657b47042d98c9c7c21770e0f0a5025b4cb 100644
--- a/components/memory_coordinator/browser/BUILD.gn
+++ b/components/memory_coordinator/browser/BUILD.gn
@@ -2,7 +2,9 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-static_library("browser") {
+component("browser") {
+  output_name = "memory_coordinator_browser"
+
   sources = [
     "memory_coordinator.cc",
     "memory_coordinator.h",
@@ -11,6 +13,8 @@ static_library("browser") {
     "memory_monitor_win.h",
   ]
 
+  defines = [ "MEMORY_COORDINATOR_IMPLEMENTATION" ]
+
   deps = [
     "//base",
     "//components/memory_coordinator/public/interfaces",