mus: Move MusGpuMemoryBufferManager into common.

services/ui/common/BUILD.gn

Index: services/ui/common/BUILD.gn
diff --git a/services/ui/common/BUILD.gn b/services/ui/common/BUILD.gn
index a52f23d7ce8094f98df8d847c2e9cf179f12bae2..52c55ac5652532bb68400e85f9d51a496321e11f 100644
--- a/services/ui/common/BUILD.gn
+++ b/services/ui/common/BUILD.gn
@@ -10,8 +10,6 @@ source_set("mus_common") {
   sources = [
     "event_matcher_util.cc",
     "event_matcher_util.h",
-    "generic_shared_memory_id_generator.cc",
-    "generic_shared_memory_id_generator.h",
     "switches.cc",
     "switches.h",
     "transient_window_utils.h",
@@ -38,6 +36,28 @@ source_set("mus_common") {
   ]
 }
 
+# GPU related code used by the server-side components (e.g. window server
+# process, display compositor in the gpu process).
+source_set("server_gpu") {
+  sources = [
+    "generic_shared_memory_id_generator.cc",
+    "generic_shared_memory_id_generator.h",
+    "mus_gpu_memory_buffer_manager.cc",
+    "mus_gpu_memory_buffer_manager.h",
+  ]
+
+  deps = [
+    "//gpu/ipc/client",
+  ]
+
+  public_deps = [
+    "//gpu/command_buffer/client",
+    "//gpu/ipc/common",
+    "//services/ui/gpu/interfaces",
+    "//ui/gfx",
+  ]
+}
+
 source_set("run_all_service_tests") {
   testonly = true