WebRTC: Repurpose GN bots to GYP for all but iOS

masters/master.client.webrtc/slaves.cfg

Index: masters/master.client.webrtc/slaves.cfg
diff --git a/masters/master.client.webrtc/slaves.cfg b/masters/master.client.webrtc/slaves.cfg
index f3936aafe9f377e0f50d01ee45679afeb328395d..8e055841bdb5732347fd90c19a79d184eeabccf7 100644
--- a/masters/master.client.webrtc/slaves.cfg
+++ b/masters/master.client.webrtc/slaves.cfg
@@ -19,13 +19,13 @@ slaves = [
       'Android64 Builder',
       'Android64 Builder (dbg)',
       'Android64 Builder x64 (dbg)',
-      'Android32 GN',
-      'Android32 GN (dbg)',
+      'Android32 GYP',
+      'Android32 GYP (dbg)',
       'Linux32 ARM',
       'Linux64 Debug',
       'Linux64 Release',
-      'Linux64 Debug (GN)',
-      'Linux64 Release (GN)',
+      'Linux64 Debug (GYP)',
+      'Linux64 Release (GYP)',
       'Linux64 Release (Libfuzzer)',
       'Linux Asan',
       'Linux MSan',
@@ -129,8 +129,8 @@ slaves = [
       'iOS API Framework Builder',
       'Mac64 Debug',
       'Mac64 Release',
-      'Mac64 Debug (GN)',
-      'Mac64 Release (GN)',
+      'Mac64 Debug (GYP)',
+      'Mac64 Release (GYP)',
       'Mac Asan',
     ],
     'hostname': 'vm%d-m3' % i,
@@ -159,8 +159,8 @@ slaves = [
       'Win32 Release',
       'Win64 Debug',
       'Win64 Release',
-      'Win64 Debug (GN)',
-      'Win64 Release (GN)',
+      'Win64 Debug (GYP)',
+      'Win64 Release (GYP)',
       'Win32 Debug (Clang)',
       'Win32 Release (Clang)',
       'Win64 Debug (Clang)',