Flip DrMemory memory.fyi builders to GN.

tools/mb/mb_config.pyl

Index: tools/mb/mb_config.pyl
diff --git a/tools/mb/mb_config.pyl b/tools/mb/mb_config.pyl
index 5a48530ff2248544a51a5fd9add52f939fe57cb3..d86f75473c46f3fcf3760ca683af7268908870f1 100644
--- a/tools/mb/mb_config.pyl
+++ b/tools/mb/mb_config.pyl
@@ -408,8 +408,8 @@
       'Chromium Linux TSan Builder':
         'swarming_tsan_disable_nacl_gn_release_bot',
       'Chromium Windows Builder (DrMemory x64)':
-        'gyp_drmemory_shared_release_x64',
-      'Chromium Windows Builder (DrMemory)': 'gyp_drmemory_shared_release_x86',
+        'gn_drmemory_shared_release_x64',
+      'Chromium Windows Builder (DrMemory)': 'gn_drmemory_shared_release_x86',
       'Linux ChromeOS MSan Tests': 'none',
       'Linux MSan Tests': 'none',
       'Linux TSan Tests': 'none',
@@ -1337,12 +1337,12 @@
       'gn', 'debug_bot_minimal_symbols', 'x86',
     ],
 
-    'gyp_drmemory_shared_release_x86': [
-      'gyp', 'drmemory', 'shared', 'release', 'x86',
+    'gn_drmemory_shared_release_x86': [
+      'gn', 'drmemory', 'shared', 'release', 'x86',
     ],
 
-    'gyp_drmemory_shared_release_x64': [
-      'gyp', 'drmemory', 'shared', 'release', 'x64',
+    'gn_drmemory_shared_release_x64': [
+      'gn', 'drmemory', 'shared', 'release', 'x64',
     ],
 
     'gn_msan_edge_release_bot': [