Include gtest headers as user headers instead of system headers.

test/gtest_uninitialized_test_.cc

@@ -29,7 +29,7 @@
 //
 // Author: wan@google.com (Zhanyong Wan)
 
-#include <gtest/gtest.h>
+#include "gtest/gtest.h"
 
 TEST(DummyTest, Dummy) {
   // This test doesn't verify anything.  We just need it to create a

test/gtest_unittest.cc

@@ -32,7 +32,7 @@
 // Tests for Google Test itself.  This verifies that the basic constructs of
 // Google Test work.
 
-#include <gtest/gtest.h>
+#include "gtest/gtest.h"
 #include <vector>
 
 // Verifies that the command line flag variables can be accessed
@@ -57,7 +57,7 @@ TEST(CommandLineFlagsTest, CanBeAccessedInCodeOnceGTestHIsIncluded) {
   EXPECT_TRUE(dummy || !dummy);  // Suppresses warning that dummy is unused.
 }
 
-#include <gtest/gtest-spi.h>
+#include "gtest/gtest-spi.h"
 
 // Indicates that this translation unit is part of Google Test's
 // implementation.  It must come before gtest-internal-inl.h is

test/gtest_xml_outfile1_test_.cc

@@ -32,7 +32,7 @@
 // gtest_xml_outfile1_test_ writes some xml via TestProperty used by
 // gtest_xml_outfiles_test.py
 
-#include <gtest/gtest.h>
+#include "gtest/gtest.h"
 
 class PropertyOne : public testing::Test {
  protected:

test/gtest_xml_outfile2_test_.cc

@@ -32,7 +32,7 @@
 // gtest_xml_outfile2_test_ writes some xml via TestProperty used by
 // gtest_xml_outfiles_test.py
 
-#include <gtest/gtest.h>
+#include "gtest/gtest.h"
 
 class PropertyTwo : public testing::Test {
  protected:

test/gtest_xml_output_unittest_.cc

@@ -38,7 +38,7 @@
 // This program will be invoked from a Python unit test.  Don't run it
 // directly.
 
-#include <gtest/gtest.h>
+#include "gtest/gtest.h"
 
 using ::testing::InitGoogleTest;
 using ::testing::TestEventListeners;

test/production.h

@@ -34,7 +34,7 @@
 #ifndef GTEST_TEST_PRODUCTION_H_
 #define GTEST_TEST_PRODUCTION_H_
 
-#include <gtest/gtest_prod.h>
+#include "gtest/gtest_prod.h"
 
 class PrivateCode {
  public:

xcode/Samples/FrameworkSample/widget_test.cc

@@ -36,7 +36,7 @@
 // This is a simple test file for the Widget class in the Widget.framework
 
 #include <string>
-#include <gtest/gtest.h>
+#include "gtest/gtest.h"
 
 #include <Widget/widget.h>