Build gtest from source rather than using SDK-provided version

ports/gtest/nacl.patch

 diff --git a/CMakeLists.txt b/CMakeLists.txt
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
 @@ -162,14 +162,16 @@ if (gtest_build_tests)
    cxx_test_with_flags(gtest_no_rtti_unittest "${cxx_no_rtti}"
      gtest_main_no_rtti test/gtest_unittest.cc)
  
 -  cxx_shared_library(gtest_dll "${cxx_default}"
 -    src/gtest-all.cc src/gtest_main.cc)
 +  if (NOT NACL)
@@ skipping 84 matching lines @@
    const int a[3] = { 1, 2, 3 };
    NativeArray<int> b(a, 3, kReference);
 @@ -961,6 +964,7 @@ TEST(PrintStlContainerTest, TwoDimensionalNativeArray) {
    NativeArray<int[3]> b(a, 2, kReference);
    EXPECT_EQ("{ { 1, 2, 3 }, { 4, 5, 6 } }", Print(b));
  }
 +#endif
  
  // 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
 @@ -44,7 +44,8 @@ import re
  import gtest_test_utils
  
  
 -IS_LINUX = os.name == 'posix' and os.uname()[0] == 'Linux'
 +IS_NACL = True
 +IS_LINUX = not IS_NACL and (os.name == 'posix' and os.uname()[0] == 'Linux')
  IS_WINDOWS = os.name == 'nt'
  
  PROGRAM_PATH = gtest_test_utils.GetTestExecutablePath('gtest_help_test_')
 diff --git a/test/gtest_test_utils.py b/test/gtest_test_utils.py
 --- a/test/gtest_test_utils.py
 +++ b/test/gtest_test_utils.py
 @@ -54,6 +54,7 @@ except:
  GTEST_OUTPUT_VAR_NAME = 'GTEST_OUTPUT'
  
  IS_WINDOWS = os.name == 'nt'
 +IS_NACL = True
  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
 -      self.exit_code = self._return_code
 +
 +    self.exit_code = self._return_code
  
  
  def Main():
 diff --git a/test/gtest_unittest.cc b/test/gtest_unittest.cc
@@ skipping 38 matching lines @@
    const int a[3] = { 0, 1, 2 };
    NativeArray<int> na(a, 3, kCopy);
 @@ -7387,6 +7394,7 @@ TEST(NativeArrayTest, WorksForTwoDimensionalArray) {
    ASSERT_EQ(2U, na.size());
    EXPECT_EQ(a, na.begin());
  }
 +#endif
  
  // 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)