Build gtest from source rather than using SDK-provided version

ports/gtest/nacl.patch

Index: ports/gtest/nacl.patch
diff --git a/ports/gtest/nacl.patch b/ports/gtest/nacl.patch
index f94cf9fe959ed1d54af6d68666376ebd5ef518f6..1ddf555cdd856119261f19011676d21694a558ae 100644
--- a/ports/gtest/nacl.patch
+++ b/ports/gtest/nacl.patch
@@ -102,6 +102,19 @@ diff --git a/test/gtest-printers_test.cc b/test/gtest-printers_test.cc
  
  // Tests that a class named iterator isn't treated as a container.
  
+diff --git a/test/gtest_break_on_failure_unittest.py b/test/gtest_break_on_failure_unittest.py
+--- a/test/gtest_break_on_failure_unittest.py
++++ b/test/gtest_break_on_failure_unittest.py
+@@ -136,6 +136,9 @@ class GTestBreakOnFailureUnitTest(gtest_test_utils.TestCase):
+ 
+     SetEnvVar(BREAK_ON_FAILURE_ENV_VAR, None)
+ 
++    if gtest_test_utils.IS_NACL:
++      return
++
+     msg = ('when %s%s, an assertion failure in "%s" %s cause a seg-fault.' %
+            (BREAK_ON_FAILURE_ENV_VAR, env_var_value_msg, ' '.join(command),
+             should_or_not))
 diff --git a/test/gtest_help_test.py b/test/gtest_help_test.py
 --- a/test/gtest_help_test.py
 +++ b/test/gtest_help_test.py
@@ -126,16 +139,7 @@ diff --git a/test/gtest_test_utils.py b/test/gtest_test_utils.py
  IS_CYGWIN = os.name == 'posix' and 'CYGWIN' in os.uname()[0]
  
  # The environment variable for specifying the path to the premature-exit file.
-@@ -172,6 +173,8 @@ def GetTestExecutablePath(executable_name, build_dir=None):
-                                       executable_name))
-   if (IS_WINDOWS or IS_CYGWIN) and not path.endswith('.exe'):
-     path += '.exe'
-+  if IS_NACL and not path.endswith('.sh'):
-+    path += '.sh'
- 
-   if not os.path.exists(path):
-     message = (
-@@ -300,7 +303,8 @@ class Subprocess:
+@@ -300,7 +301,8 @@ class Subprocess:
      else:
        self.terminated_by_signal = False
        self.exited = True
@@ -194,3 +198,33 @@ diff --git a/test/gtest_unittest.cc b/test/gtest_unittest.cc
  
  // Tests SkipPrefix().
  
+diff --git a/test/gtest_xml_outfiles_test.py b/test/gtest_xml_outfiles_test.py
+--- a/test/gtest_xml_outfiles_test.py
++++ b/test/gtest_xml_outfiles_test.py
+@@ -108,12 +108,13 @@ class GTestXMLOutFilesTest(gtest_xml_test_utils.GTestXMLTestCase):
+     #   gtest_xml_outfiles_test_.  To account for this possibillity, we
+     #   allow both names in the following code.  We should remove this
+     #   hack when Chandler Carruth's libtool replacement tool is ready.
+-    output_file_name1 = test_name + ".xml"
++    output_file_name1 = test_name + ".nexe.xml"
+     output_file1 = os.path.join(self.output_dir_, output_file_name1)
+     output_file_name2 = 'lt-' + output_file_name1
+     output_file2 = os.path.join(self.output_dir_, output_file_name2)
+     self.assert_(os.path.isfile(output_file1) or os.path.isfile(output_file2),
+-                 output_file1)
++                 "Nither output file exists (%s %s)" % (output_file1,
++                 output_file2))
+ 
+     expected = minidom.parseString(expected_xml)
+     if os.path.isfile(output_file1):
+diff --git a/test/gtest_xml_output_unittest.py b/test/gtest_xml_output_unittest.py
+--- a/test/gtest_xml_output_unittest.py
++++ b/test/gtest_xml_output_unittest.py
+@@ -193,6 +193,7 @@ class GTestXMLOutputUnitTest(gtest_xml_test_utils.GTestXMLTestCase):
+         minute=int(match.group(5)), second=int(match.group(6)))
+ 
+     time_delta = abs(datetime.datetime.now() - date_time_from_xml)
++    print date_time_from_xml
+     # timestamp value should be near the current local time
+     self.assertTrue(time_delta < datetime.timedelta(seconds=600),
+                     'time_delta is %s' % time_delta)