Include gtest headers as user headers instead of system headers.

include/gtest/internal/gtest-death-test-internal.h

@@ -37,7 +37,7 @@
 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_
 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_
 
-#include <gtest/internal/gtest-internal.h>
+#include "gtest/internal/gtest-internal.h"
 
 namespace testing {
 namespace internal {

include/gtest/internal/gtest-filepath.h

@@ -40,7 +40,7 @@
 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_FILEPATH_H_
 
-#include <gtest/internal/gtest-string.h>
+#include "gtest/internal/gtest-string.h"
 
 namespace testing {
 namespace internal {

include/gtest/internal/gtest-internal.h

@@ -37,7 +37,7 @@
 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_
 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_INTERNAL_H_
 
-#include <gtest/internal/gtest-port.h>
+#include "gtest/internal/gtest-port.h"
 
 #if GTEST_OS_LINUX
 #include <stdlib.h>
@@ -52,9 +52,9 @@
 #include <limits>
 #include <set>
 
-#include <gtest/internal/gtest-string.h>
-#include <gtest/internal/gtest-filepath.h>
-#include <gtest/internal/gtest-type-util.h>
+#include "gtest/internal/gtest-string.h"
+#include "gtest/internal/gtest-filepath.h"
+#include "gtest/internal/gtest-type-util.h"
 
 // Due to C++ preprocessor weirdness, we need double indirection to
 // concatenate two tokens when one of them is __LINE__.  Writing

include/gtest/internal/gtest-linked_ptr.h

@@ -71,7 +71,7 @@
 #include <stdlib.h>
 #include <assert.h>
 
-#include <gtest/internal/gtest-port.h>
+#include "gtest/internal/gtest-port.h"
 
 namespace testing {
 namespace internal {

include/gtest/internal/gtest-param-util-generated.h

@@ -47,8 +47,8 @@
 // scripts/fuse_gtest.py depends on gtest's own header being #included
 // *unconditionally*.  Therefore these #includes cannot be moved
 // inside #if GTEST_HAS_PARAM_TEST.
-#include <gtest/internal/gtest-param-util.h>
-#include <gtest/internal/gtest-port.h>
+#include "gtest/internal/gtest-param-util.h"
+#include "gtest/internal/gtest-port.h"
 
 #if GTEST_HAS_PARAM_TEST
 

include/gtest/internal/gtest-param-util-generated.h.pump

@@ -48,8 +48,8 @@ $var maxtuple = 10  $$ Maximum number of Combine arguments we want to support.
 // scripts/fuse_gtest.py depends on gtest's own header being #included
 // *unconditionally*.  Therefore these #includes cannot be moved
 // inside #if GTEST_HAS_PARAM_TEST.
-#include <gtest/internal/gtest-param-util.h>
-#include <gtest/internal/gtest-port.h>
+#include "gtest/internal/gtest-param-util.h"
+#include "gtest/internal/gtest-port.h"
 
 #if GTEST_HAS_PARAM_TEST
 

include/gtest/internal/gtest-param-util.h

@@ -41,10 +41,10 @@
 // scripts/fuse_gtest.py depends on gtest's own header being #included
 // *unconditionally*.  Therefore these #includes cannot be moved
 // inside #if GTEST_HAS_PARAM_TEST.
-#include <gtest/internal/gtest-internal.h>
-#include <gtest/internal/gtest-linked_ptr.h>
-#include <gtest/internal/gtest-port.h>
-#include <gtest/gtest-printers.h>
+#include "gtest/internal/gtest-internal.h"
+#include "gtest/internal/gtest-linked_ptr.h"
+#include "gtest/internal/gtest-port.h"
+#include "gtest/gtest-printers.h"
 
 #if GTEST_HAS_PARAM_TEST
 

include/gtest/internal/gtest-port.h

@@ -441,7 +441,7 @@
 #if GTEST_HAS_TR1_TUPLE
 
 #if GTEST_USE_OWN_TR1_TUPLE
-#include <gtest/internal/gtest-tuple.h>
+#include "gtest/internal/gtest-tuple.h"
 #elif GTEST_OS_SYMBIAN
 
 // On Symbian, BOOST_HAS_TR1_TUPLE causes Boost's TR1 tuple library to

include/gtest/internal/gtest-string.h

@@ -47,7 +47,7 @@
 #endif
 
 #include <string.h>
-#include <gtest/internal/gtest-port.h>
+#include "gtest/internal/gtest-port.h"
 
 #include <string>
 

include/gtest/internal/gtest-type-util.h

@@ -44,8 +44,8 @@
 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
 
-#include <gtest/internal/gtest-port.h>
-#include <gtest/internal/gtest-string.h>
+#include "gtest/internal/gtest-port.h"
+#include "gtest/internal/gtest-string.h"
 
 #if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P
 

include/gtest/internal/gtest-type-util.h.pump

@@ -42,8 +42,8 @@ $var n = 50  $$ Maximum length of type lists we want to support.
 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_TYPE_UTIL_H_
 
-#include <gtest/internal/gtest-port.h>
-#include <gtest/internal/gtest-string.h>
+#include "gtest/internal/gtest-port.h"
+#include "gtest/internal/gtest-string.h"
 
 #if GTEST_HAS_TYPED_TEST || GTEST_HAS_TYPED_TEST_P