Correct iossim for partial availability on latest Xcode beta.

testing/iossim/iossim.mm

 // Copyright (c) 2012 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.
 #import <Foundation/Foundation.h>
 #if defined(__MAC_10_12) && __MAC_OS_X_VERSION_MAX_ALLOWED >= __MAC_10_12
 #include <getopt.h>
 #include <string>
 
 namespace {
 
@@ skipping 241 matching lines @@
       dataFromPropertyList:xctestrun
                     format:NSPropertyListXMLFormat_v1_0
           errorDescription:&error];
   [data writeToFile:tempFilePath atomically:YES];
   XCRunTask* task = [[[XCRunTask alloc] initWithArguments:@[
     @"xcodebuild", @"-xctestrun", tempFilePath, @"-destination",
     [@"platform=iOS Simulator,id=" stringByAppendingString:udid],
     @"test-without-building"
   ]] autorelease];
 
-  // The following stderr messages are meaningless on iossim when not running
-  // xctests and can be safely stripped.
   if (!xctest_path) {
+    // The following stderr messages are meaningless on iossim when not running
+    // xctests and can be safely stripped.
+    NSArray* ignore_strings = @[
+      @"IDETestOperationsObserverErrorDomain", @"** TEST EXECUTE FAILED **"
+    ];
     NSPipe* stderr_pipe = [NSPipe pipe];
     stderr_pipe.fileHandleForReading.readabilityHandler =
         ^(NSFileHandle* handle) {
           NSString* log = [[[NSString alloc] initWithData:handle.availableData
                                                  encoding:NSUTF8StringEncoding]
               autorelease];
-          if ([log containsString:@"IDETestOperationsObserverErrorDomain"] ||
-              [log containsString:@"** TEST EXECUTE FAILED **"]) {
-            return;
+          for (NSString* ignore_string in ignore_strings) {
+            if ([log rangeOfString:ignore_string].location != NSNotFound) {
+              return;
+            }
           }
           printf("%s", [log UTF8String]);
         };
     [task setStandardError:stderr_pipe];
   }
   [task run];
 }
 
 int main(int argc, char* const argv[]) {
   NSString* app_path = nil;
@@ skipping 970 matching lines @@
   }
 
   // Note that this code is only executed if the simulator fails to start
   // because once the main run loop is started, only the delegate calling
   // exit() will end the program.
   [pool drain];
   return kExitFailure;
 }
 
 #endif