Add configuration for iOS perf bot.

Depends on https://chromium-review.googlesource.com/c/chromium/tools/build/+/753625

No-Try: true
Bug: webrtc:7156
Change-Id: I3bf46ad8185a8f0c13bd8d6cd3217b4d6310e30d
Reviewed-on: https://webrtc-review.googlesource.com/18480
Commit-Queue: Edward Lemur <ehmaldonado@webrtc.org>
Reviewed-by: Patrik Höglund <phoglund@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#20568}

tools_webrtc/ios/internal.client.webrtc/iOS64_Perf.json

@@ -0,0 +1,28 @@
+{
+  "comments": [
+    "Tests for 64-bit iOS devices."
+  ],
+  "xcode version": "9.0",
+  "gn_args": [
+    "goma_dir=\"$(goma_dir)\"",
+    "is_component_build=false",
+    "is_debug=false",
+    "target_cpu=\"arm64\"",
+    "target_os=\"ios\"",
+    "use_goma=true"
+  ],
+  "env": {
+    "MAC_TOOLCHAIN_REVISION": "8E2002-1"
+  },
+  "use_analyze": false,
+  "additional_compile_targets": [ "all" ],
+  "configuration": "Debug",
+  "bucket": "chromium-webrtc",
+  "tests": [
+    {
+      "include": "perf_tests.json",
+      "device type": "iPhone 7",
+      "os": "11.0.3"
+    }
+  ]
+}

tools_webrtc/ios/tests/perf_tests.json

@@ -0,0 +1,9 @@
+{
+  "tests": [
+    {
+      "app": "webrtc_perf_tests",
+      "bot_id": "build15-a7",
+      "pool": "WebRTC"
+    }
+  ]
+}