Remove some old support for PNaCl Scons browser tests.

ppapi/native_client/tests/breakpad_crash_test/trusted_crash_in_startup.html

 <!--
   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.
 -->
 
 <script type="text/javascript" src="nacltest.js"></script>
 
 <div id="scratch_space"></div>
 
@@ skipping 23 matching lines @@
 
   div.addEventListener('load', status.wrap(function(event) {
     status.fail('We expected this process to crash during startup');
   }), true);
 
   div.addEventListener('error', status.wrap(function(event) {
     var error = embed.lastError;
     status.log('Received error: ' + error);
     // This error occurs only because NACL_CRASH_TEST is set.  We would
     // not normally expect to get this error in the browser.
-    // For PNaCl, the crash will occur while starting the compiler process.
-    var test_args = getTestArguments({ 'is_pnacl': 'false' });
-    if (test_args['is_pnacl'] != 'false') {
-      var expected_error = ('NaCl module load failed: PnaclCoordinator: ' +
-                            'Compile process could not be created');
-      status.assert(begins_with(embed.lastError, expected_error));
-    } else {
-      var expected_error_prefix = 'NaCl module load failed: ServiceRuntime: ';
-      var suffix1 = 'command channel creation failed';
-      var suffix2 = 'failed to start';
-      status.assert(error == expected_error_prefix + suffix1 ||
-                    error == expected_error_prefix + suffix2);
-    }
+    var expected_error_prefix = 'NaCl module load failed: ServiceRuntime: ';
+    var suffix1 = 'command channel creation failed';
+    var suffix2 = 'failed to start';
+    status.assert(error == expected_error_prefix + suffix1 ||
+                  error == expected_error_prefix + suffix2);
     status.pass();
   }), true);
 
   document.getElementById('scratch_space').appendChild(div);
 });
 
 tester.run();
 
 </script>