Add lots of GN targets

build/config/BUILD.gn

Index: build/config/BUILD.gn
diff --git a/build/config/BUILD.gn b/build/config/BUILD.gn
index 9e9c88ffc7fb57c3ef905a2aef62cd43712df96e..b0a8ab4a3eafd5f9ed0d8e4f337706d0375739ea 100644
--- a/build/config/BUILD.gn
+++ b/build/config/BUILD.gn
@@ -32,12 +32,9 @@ config("feature_flags") {
   defines = [
       "CHROMIUM_BUILD",
       "ENABLE_ONE_CLICK_SIGNIN",
-      "ENABLE_REMOTING=1",
       "ENABLE_NOTIFICATIONS",
       "ENABLE_EGLIMAGE=1",
       "ENABLE_BACKGROUND=1",
-      "ENABLE_GOOGLE_NOW=1",
-      "ENABLE_SETTINGS_APP=1",
       "USE_MOJO=1",
       "V8_DEPRECATION_WARNINGS",  # Don't use deprecated V8 APIs anywhere.
       # Temporary suppression until Blink code can be removed.
@@ -160,6 +157,9 @@ config("feature_flags") {
   if (enable_app_list) {
     defines += [ "ENABLE_APP_LIST=1" ]
   }
+  if (enable_settings_app) {
+    defines += [ "ENABLE_SETTINGS_APP=1" ]
+  }
   if (enable_managed_users) {
     defines += [ "ENABLE_MANAGED_USERS=1" ]
   }
@@ -172,6 +172,15 @@ config("feature_flags") {
   if (enable_wifi_bootstrapping) {
     defines += [ "ENABLE_WIFI_BOOTSTRAPPING=1" ]
   }
+  if (enable_image_loader_extension) {
+    defines += [ "IMAGE_LOADER_EXTENSION=1" ]
+  }
+  if (enable_remoting) {
+    defines += [ "ENABLE_REMOTING=1" ]
+  }
+  if (enable_google_now) {
+    defines += [ "ENABLE_GOOGLE_NOW=1" ]
+  }
 }
 
 # Debug/release ----------------------------------------------------------------