Recipe changes to move webview perf bots to the android/perf recipe

masters/master.chromium.perf.fyi/slaves.cfg

 # -*- python -*-
 # ex: set syntax=python:
 
 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # See master.experimental/slaves.cfg for documentation.
 
 slaves = [
   {
     'master': 'ChromiumPerfFyi',
     'hostname': 'build34-a1',
     'builder': 'Win x64 FYI Builder',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
   },
   {
     'master': 'ChromiumPerfFyi',
     'hostname': 'build58-b1',
-    'builder': 'android_webview_aosp_perf',
+    'builder': 'WebView Nexus5 Perf (1)',
     'os': 'linux',
-    'version': 'precise',
+    'version': 'trusty',
     'bits': '64',
   },
   {
+    'master': 'ChromiumPerfFyi',
+    'hostname': 'build76-b1',
+    'builder': 'WebView Nexus5X Perf (1)',
+    'os': 'linux',
+    'version': 'trusty',
+    'bits': '64',
+  },
+  {
+    'master': 'ChromiumPerfFyi',
+    'hostname': 'build77-b1',
+    'builder': 'WebView Nexus5X Perf (2)',
+    'os': 'linux',
+    'version': 'trusty',
+    'bits': '64',
+  },
+  {
     'master': 'ChromiumPerfFyi',
     'hostname': 'build131-a1',
     'builder': 'Win 7 Intel GPU Perf (Xeon)',
     'os': 'win',
     'version': 'win7',
     'bits': '64',
   },
   {
     'master': 'ChromiumPerfFyi',
     'hostname': 'build8-m1',
@@ skipping 28 matching lines @@
   },
   {
     'master': 'ChromiumPerfFyi',
     'hostname': 'slave50-c1',
     'builder': 'Linux CT Top1K RR Perf',
     'os': 'linux',
     'version': 'trusty',
     'bits': '64',
   },
 ]