17 files changed, 18 insertions, 42 deletions
diff --git a/test/clear_system_state.h b/test/clear_system_state.h
index 8f08a4cdb..5e7679744 100644
--- a/test/clear_system_state.h
+++ b/test/clear_system_state.h
@@ -11,11 +11,9 @@
 #define TEST_CLEAR_SYSTEM_STATE_H_
 
 #include "./vpx_config.h"
-extern "C" {
 #if ARCH_X86 || ARCH_X86_64
 # include "vpx_ports/x86.h"
 #endif
-}
 
 namespace libvpx_test {
 
diff --git a/test/convolve_test.cc b/test/convolve_test.cc
index 9ab60b1c3..e920de874 100644
--- a/test/convolve_test.cc
+++ b/test/convolve_test.cc
@@ -14,13 +14,11 @@
 #include "test/util.h"
 #include "third_party/googletest/src/include/gtest/gtest.h"
 
-extern "C" {
 #include "./vpx_config.h"
 #include "./vp9_rtcd.h"
 #include "vp9/common/vp9_filter.h"
 #include "vpx_mem/vpx_mem.h"
 #include "vpx_ports/mem.h"
-}
 
 namespace {
 typedef void (*convolve_fn_t)(const uint8_t *src, ptrdiff_t src_stride,
diff --git a/test/dct16x16_test.cc b/test/dct16x16_test.cc
index 5496d0b62..ce0431860 100644
--- a/test/dct16x16_test.cc
+++ b/test/dct16x16_test.cc
@@ -18,12 +18,13 @@
 #include "test/register_state_check.h"
 #include "test/util.h"
 
-extern "C" {
-#include "vp9/common/vp9_entropy.h"
 #include "./vp9_rtcd.h"
+#include "vp9/common/vp9_entropy.h"
+#include "vpx/vpx_integer.h"
+
+extern "C" {
 void vp9_idct16x16_256_add_c(const int16_t *input, uint8_t *output, int pitch);
 }
-#include "vpx/vpx_integer.h"
 
 using libvpx_test::ACMRandom;
 
diff --git a/test/dct32x32_test.cc b/test/dct32x32_test.cc
index a1e472a0a..a2608acb5 100644
--- a/test/dct32x32_test.cc
+++ b/test/dct32x32_test.cc
@@ -18,12 +18,9 @@
 #include "test/register_state_check.h"
 #include "test/util.h"
 
-extern "C" {
 #include "./vpx_config.h"
-#include "vp9/common/vp9_entropy.h"
 #include "./vp9_rtcd.h"
-}
-
+#include "vp9/common/vp9_entropy.h"
 #include "vpx/vpx_integer.h"
 
 using libvpx_test::ACMRandom;
diff --git a/test/fdct4x4_test.cc b/test/fdct4x4_test.cc
index 67426eb74..5db5f5cae 100644
--- a/test/fdct4x4_test.cc
+++ b/test/fdct4x4_test.cc
@@ -18,12 +18,13 @@
 #include "test/register_state_check.h"
 #include "test/util.h"
 
-extern "C" {
-#include "vp9/common/vp9_entropy.h"
 #include "./vp9_rtcd.h"
+#include "vp9/common/vp9_entropy.h"
+#include "vpx/vpx_integer.h"
+
+extern "C" {
 void vp9_idct4x4_16_add_c(const int16_t *input, uint8_t *output, int pitch);
 }
-#include "vpx/vpx_integer.h"
 
 using libvpx_test::ACMRandom;
 
diff --git a/test/fdct8x8_test.cc b/test/fdct8x8_test.cc
index 19ffe26aa..beef98055 100644
--- a/test/fdct8x8_test.cc
+++ b/test/fdct8x8_test.cc
@@ -18,12 +18,13 @@
 #include "test/register_state_check.h"
 #include "test/util.h"
 
-extern "C" {
-#include "vp9/common/vp9_entropy.h"
 #include "./vp9_rtcd.h"
+#include "vp9/common/vp9_entropy.h"
+#include "vpx/vpx_integer.h"
+
+extern "C" {
 void vp9_idct8x8_64_add_c(const int16_t *input, uint8_t *output, int pitch);
 }
-#include "vpx/vpx_integer.h"
 
 using libvpx_test::ACMRandom;
 
diff --git a/test/intrapred_test.cc b/test/intrapred_test.cc
index 5fba70025..b28f5fbe6 100644
--- a/test/intrapred_test.cc
+++ b/test/intrapred_test.cc
@@ -14,12 +14,11 @@
 #include "test/clear_system_state.h"
 #include "test/register_state_check.h"
 #include "third_party/googletest/src/include/gtest/gtest.h"
-extern "C" {
+
 #include "./vpx_config.h"
 #include "./vp8_rtcd.h"
 #include "vp8/common/blockd.h"
 #include "vpx_mem/vpx_mem.h"
-}
 
 namespace {
 
diff --git a/test/md5_helper.h b/test/md5_helper.h
index 289f6089b..dd446f4f6 100644
--- a/test/md5_helper.h
+++ b/test/md5_helper.h
@@ -11,10 +11,8 @@
 #ifndef TEST_MD5_HELPER_H_
 #define TEST_MD5_HELPER_H_
 
-extern "C" {
 #include "./md5_utils.h"
 #include "vpx/vpx_decoder.h"
-}
 
 namespace libvpx_test {
 class MD5 {
diff --git a/test/partial_idct_test.cc b/test/partial_idct_test.cc
index a6569c0c3..2a32410f3 100644
--- a/test/partial_idct_test.cc
+++ b/test/partial_idct_test.cc
@@ -18,12 +18,9 @@
 #include "test/register_state_check.h"
 #include "test/util.h"
 
-extern "C" {
 #include "./vp9_rtcd.h"
 #include "vp9/common/vp9_blockd.h"
 #include "vp9/common/vp9_scan.h"
-}
-
 #include "vpx/vpx_integer.h"
 
 using libvpx_test::ACMRandom;
diff --git a/test/set_roi.cc b/test/set_roi.cc
index 9d2e7715f..e28f511be 100644
--- a/test/set_roi.cc
+++ b/test/set_roi.cc
@@ -18,11 +18,9 @@
 
 #include "third_party/googletest/src/include/gtest/gtest.h"
 #include "test/acm_random.h"
+#include "vp8/encoder/onyx_int.h"
 #include "vpx/vpx_integer.h"
 #include "vpx_mem/vpx_mem.h"
-extern "C" {
-#include "vp8/encoder/onyx_int.h"
-}
 
 using libvpx_test::ACMRandom;
 
diff --git a/test/subtract_test.cc b/test/subtract_test.cc
index d1f272972..3211c5c8a 100644
--- a/test/subtract_test.cc
+++ b/test/subtract_test.cc
@@ -12,13 +12,11 @@
 #include "test/acm_random.h"
 #include "test/clear_system_state.h"
 #include "test/register_state_check.h"
-extern "C" {
 #include "./vpx_config.h"
 #include "./vp8_rtcd.h"
 #include "vp8/common/blockd.h"
 #include "vp8/encoder/block.h"
 #include "vpx_mem/vpx_mem.h"
-}
 
 typedef void (*subtract_b_fn_t)(BLOCK *be, BLOCKD *bd, int pitch);
 
diff --git a/test/test_libvpx.cc b/test/test_libvpx.cc
index bbcbcf9bc..fc035af8f 100644
--- a/test/test_libvpx.cc
+++ b/test/test_libvpx.cc
@@ -9,10 +9,10 @@
  */
 #include <string>
 #include "./vpx_config.h"
-extern "C" {
 #if ARCH_X86 || ARCH_X86_64
 #include "vpx_ports/x86.h"
 #endif
+extern "C" {
 #if CONFIG_VP8
 extern void vp8_rtcd();
 #endif
diff --git a/test/variance_test.cc b/test/variance_test.cc
index 3f5560170..b9144ffab 100644
--- a/test/variance_test.cc
+++ b/test/variance_test.cc
@@ -17,17 +17,15 @@
 
 #include "vpx/vpx_integer.h"
 #include "./vpx_config.h"
-extern "C" {
 #include "vpx_mem/vpx_mem.h"
 #if CONFIG_VP8_ENCODER
-# include "vp8/common/variance.h"
 # include "./vp8_rtcd.h"
+# include "vp8/common/variance.h"
 #endif
 #if CONFIG_VP9_ENCODER
-# include "vp9/encoder/vp9_variance.h"
 # include "./vp9_rtcd.h"
+# include "vp9/encoder/vp9_variance.h"
 #endif
-}
 #include "test/acm_random.h"
 
 namespace {
diff --git a/test/vp8_boolcoder_test.cc b/test/vp8_boolcoder_test.cc
index 0383af207..fa7ee6e8c 100644
--- a/test/vp8_boolcoder_test.cc
+++ b/test/vp8_boolcoder_test.cc
@@ -20,10 +20,8 @@
 #include "third_party/googletest/src/include/gtest/gtest.h"
 #include "vpx/vpx_integer.h"
 
-extern "C" {
 #include "vp8/encoder/boolhuff.h"
 #include "vp8/decoder/dboolhuff.h"
-}
 
 namespace {
 const int num_tests = 10;
diff --git a/test/vp9_boolcoder_test.cc b/test/vp9_boolcoder_test.cc
index 1593c0267..c579adeac 100644
--- a/test/vp9_boolcoder_test.cc
+++ b/test/vp9_boolcoder_test.cc
@@ -14,10 +14,8 @@
 
 #include "third_party/googletest/src/include/gtest/gtest.h"
 
-extern "C" {
 #include "vp9/decoder/vp9_reader.h"
 #include "vp9/encoder/vp9_writer.h"
-}
 
 #include "test/acm_random.h"
 #include "vpx/vpx_integer.h"
diff --git a/test/vp9_subtract_test.cc b/test/vp9_subtract_test.cc
index e4c4cfeff..d7df2867d 100644
--- a/test/vp9_subtract_test.cc
+++ b/test/vp9_subtract_test.cc
@@ -12,12 +12,10 @@
 #include "test/acm_random.h"
 #include "test/clear_system_state.h"
 #include "test/register_state_check.h"
-extern "C" {
 #include "./vpx_config.h"
 #include "./vp9_rtcd.h"
 #include "vp9/common/vp9_blockd.h"
 #include "vpx_mem/vpx_mem.h"
-}
 
 typedef void (*subtract_fn_t)(int rows, int cols,
                               int16_t *diff_ptr, ptrdiff_t diff_stride,
diff --git a/test/y4m_video_source.h b/test/y4m_video_source.h
index bd86c2c04..20d2be02b 100644
--- a/test/y4m_video_source.h
+++ b/test/y4m_video_source.h
@@ -12,9 +12,7 @@
 #include <string>
 
 #include "test/video_source.h"
-extern "C" {
 #include "./y4minput.h"
-}
 
 namespace libvpx_test {