Rename "test" ozone platform to "headless"

media/ozone/media_ozone_platform.cc

Index: media/ozone/media_ozone_platform.cc
diff --git a/media/ozone/media_ozone_platform.cc b/media/ozone/media_ozone_platform.cc
index cda13962820c4221e5302cd5aa6e9ff46e52b232..64a58b492e122b8643a18cf73a4d24df3cc226bb 100644
--- a/media/ozone/media_ozone_platform.cc
+++ b/media/ozone/media_ozone_platform.cc
@@ -44,7 +44,7 @@ MediaOzonePlatform* CreateMediaOzonePlatformDrm() {
   return new MediaOzonePlatformStub;
 }
 
-MediaOzonePlatform* CreateMediaOzonePlatformEgltest() {
+MediaOzonePlatform* CreateMediaOzonePlatformEglheadless() {
   return new MediaOzonePlatformStub;
 }
 
@@ -52,7 +52,7 @@ MediaOzonePlatform* CreateMediaOzonePlatformGbm() {
   return new MediaOzonePlatformStub;
 }
 
-MediaOzonePlatform* CreateMediaOzonePlatformTest() {
+MediaOzonePlatform* CreateMediaOzonePlatformHeadless() {
   return new MediaOzonePlatformStub;
 }