WebRTC: Add Linux32 ARM builder.

masters/master.client.webrtc.fyi/master_linux_cfg.py

Index: masters/master.client.webrtc.fyi/master_linux_cfg.py
diff --git a/masters/master.client.webrtc.fyi/master_linux_cfg.py b/masters/master.client.webrtc.fyi/master_linux_cfg.py
index 29eae87c67a2b080118dd2ce7a1c7886a1749d46..cb997d77b72cb4a643c5e6ea46636871e8c45729 100644
--- a/masters/master.client.webrtc.fyi/master_linux_cfg.py
+++ b/masters/master.client.webrtc.fyi/master_linux_cfg.py
@@ -15,6 +15,7 @@ def Update(c):
                             branch='master',
                             treeStableTimer=0,
                             builderNames=[
+                                'Linux32 ARM',
                                 'Linux64 Release (swarming)',
                                 'Linux Tsan v2 (parallel)',
       ]),
@@ -29,6 +30,10 @@ def Update(c):
 
   specs = [
     {
+      'name': 'Linux32 ARM',
+      'slavebuilddir': 'linux_arm',
+    },
+    {
       'name': 'Linux Tsan v2 (parallel)',
       'slavebuilddir': 'linux_tsan2',
     },