[ios] Fix for Xcode 10 swarming-cron deployment.

Conditionally set IDEBundleInjection and libXCTestBundleInject.dylib based
on Xcode version.

Bug: 843236
Cq-Include-Trybots: luci.chromium.try:ios-simulator-full-configs;master.tryserver.chromium.mac:ios-simulator-cronet
Change-Id: I2a13fd1e93cbe87e80b045c1d3010f518a6ed862
Reviewed-on: https://chromium-review.googlesource.com/1141276Reviewed-by: Sergey Berezin <sergeyberezin@chromium.org>
Commit-Queue: Justin Cohen <justincohen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#576125}

ios/build/bots/scripts/test_runner.py

@@ -970,6 +970,12 @@ class DeviceTestRunner(TestRunner):
     if len(self.udid.splitlines()) != 1:
       raise DeviceDetectionError(self.udid)
     if xctest:
+      xcode_info = get_current_xcode_info()
+      xcode_version = float(xcode_info['version'])
+      inject_path = 'usr/lib/libXCTestBundleInject.dylib'
+      # This can be removed once xcode versions < 10 are deprecated.
+      if 10 > xcode_version:
+        inject_path = 'Library/PrivateFrameworks/IDEBundleInjection.framework/'
       self.xctestrun_file = tempfile.mkstemp()[1]
       self.xctestrun_data = {
         'TestTargetName': {
@@ -978,8 +984,7 @@ class DeviceTestRunner(TestRunner):
           'TestHostPath': '%s' % self.app_path,
           'TestingEnvironmentVariables': {
             'DYLD_INSERT_LIBRARIES':
-              '__PLATFORMS__/iPhoneOS.platform/Developer/Library/'
-            'PrivateFrameworks/IDEBundleInjection.framework/IDEBundleInjection',
+              '__PLATFORMS__/iPhoneOS.platform/Developer/%s' % inject_path,
             'DYLD_LIBRARY_PATH':
               '__PLATFORMS__/iPhoneOS.platform/Developer/Library',
             'DYLD_FRAMEWORK_PATH':