MB: Flip iOS bots to GN by default

Change the previous GN configs to build GYP instead
(since we'll keep GYP around for a while) but exclude tests
and examples for that config, since we'll only support the production
code for GYP.

Add new configs for upcoming rename of those bots to GYP instead
of GN.

BUG=webrtc:5949
NOTRY=True
TBR=ehmaldonado@webrtc.org

Review-Url: https://codereview.webrtc.org/2291443002
Cr-Commit-Position: refs/heads/master@{#13980}
diff --git a/webrtc/build/mb_config.pyl b/webrtc/build/mb_config.pyl
index bd5d656..e24258c 100644
--- a/webrtc/build/mb_config.pyl
+++ b/webrtc/build/mb_config.pyl
@@ -20,14 +20,18 @@
   'masters': {
     'client.webrtc': {
       # iOS
-      'iOS32 Debug': 'ios_gyp_debug_static_bot_arm_device',
-      'iOS32 Release': 'ios_gyp_release_bot_arm_device',
-      'iOS64 Debug': 'ios_gyp_debug_static_bot_arm64_device',
-      'iOS64 Release': 'ios_gyp_release_bot_arm64_device',
-      'iOS32 Simulator Debug': 'ios_gyp_debug_static_bot_x86',
-      'iOS64 Simulator Debug': 'ios_gyp_debug_static_bot_x64',
-      'iOS64 Debug (GN)': 'ios_gn_debug_static_bot_arm64_device',
-      'iOS64 Release (GN)': 'ios_gn_release_bot_arm64_device',
+      'iOS32 Debug': 'ios_gn_debug_static_bot_arm_device',
+      'iOS32 Release': 'ios_gn_release_bot_arm_device',
+      'iOS64 Debug': 'ios_gn_debug_static_bot_arm64_device',
+      'iOS64 Release': 'ios_gn_release_bot_arm64_device',
+      'iOS32 Simulator Debug': 'ios_gn_debug_static_bot_x86',
+      'iOS64 Simulator Debug': 'ios_gn_debug_static_bot_x64',
+      # TODO(kjellander): Remove the two GN configs below as soon we've renamed
+      # the bots to the GYP versions (duplicated now).
+      'iOS64 Debug (GN)': 'ios_gyp_debug_static_bot_arm64_device',
+      'iOS64 Release (GN)': 'ios_gyp_release_bot_arm64_device',
+      'iOS64 Debug (GYP)': 'ios_gyp_debug_static_bot_arm64_device',
+      'iOS64 Release (GYP)': 'ios_gyp_release_bot_arm64_device',
 
       # Mac
       'Mac64 Debug': 'gn_debug_bot_x64',
@@ -103,14 +107,18 @@
     },
     'tryserver.webrtc': {
       # iOS
-      'ios_dbg': 'ios_gyp_debug_static_bot_arm_device',
-      'ios_rel': 'ios_gyp_release_bot_arm_device',
-      'ios_arm64_dbg': 'ios_gyp_debug_static_bot_arm64_device',
-      'ios_arm64_rel': 'ios_gyp_release_bot_arm64_device',
-      'ios32_sim_dbg': 'ios_gyp_debug_static_bot_x86',
-      'ios64_sim_dbg': 'ios_gyp_debug_static_bot_x64',
-      'ios64_gn_dbg': 'ios_gn_debug_static_bot_arm64_device',
-      'ios64_gn_rel': 'ios_gn_release_bot_arm64_device',
+      'ios_dbg': 'ios_gn_debug_static_bot_arm_device',
+      'ios_rel': 'ios_gn_release_bot_arm_device',
+      'ios_arm64_dbg': 'ios_gn_debug_static_bot_arm64_device',
+      'ios_arm64_rel': 'ios_gn_release_bot_arm64_device',
+      'ios32_sim_dbg': 'ios_gn_debug_static_bot_x86',
+      'ios64_sim_dbg': 'ios_gn_debug_static_bot_x64',
+      # TODO(kjellander): Remove the two GN configs below as soon we've renamed
+      # the bots to the GYP versions (duplicated now).
+      'ios64_gn_dbg': 'ios_gyp_debug_static_bot_arm64_device',
+      'ios64_gn_rel': 'ios_gyp_release_bot_arm64_device',
+      'ios64_gyp_dbg': 'ios_gyp_debug_static_bot_arm64_device',
+      'ios64_gyp_rel': 'ios_gyp_release_bot_arm64_device',
 
       # Mac
       'mac_compile_dbg': 'gn_debug_bot_x64',
@@ -209,11 +217,17 @@
     'ios_gn_release_bot_arm64_device': [
       'ios', 'gn', 'release_bot', 'arm64', 'device'
     ],
-    'ios_gyp_debug_static_bot_arm_device': [
-      'ios', 'gyp', 'debug_static_bot', 'arm', 'device'
+    'ios_gn_debug_static_bot_arm_device': [
+      'ios', 'gn', 'debug_static_bot', 'arm', 'device'
     ],
-    'ios_gyp_release_bot_arm_device': [
-      'ios', 'gyp', 'release_bot', 'arm', 'device'
+    'ios_gn_release_bot_arm_device': [
+      'ios', 'gn', 'release_bot', 'arm', 'device'
+    ],
+    'ios_gn_debug_static_bot_x86': [
+      'ios', 'gn', 'debug_static_bot', 'x86'
+    ],
+    'ios_gn_debug_static_bot_x64': [
+      'ios', 'gn', 'debug_static_bot', 'x64'
     ],
     'ios_gyp_debug_static_bot_arm64_device': [
       'ios', 'gyp', 'debug_static_bot', 'arm64', 'device'
@@ -221,12 +235,6 @@
     'ios_gyp_release_bot_arm64_device': [
       'ios', 'gyp', 'release_bot', 'arm64', 'device'
     ],
-    'ios_gyp_debug_static_bot_x86': [
-      'ios', 'gyp', 'debug_static_bot', 'x86'
-    ],
-    'ios_gyp_debug_static_bot_x64': [
-      'ios', 'gyp', 'release_bot', 'x64'
-    ],
 
     # Linux, Mac and Windows
     'gn_crosscompile_release_bot_arm': [