Include <ostream> for std::ostream.

Change-Id: I08fe4b457f536c49c0d5ba0492d90d702275e643
diff --git a/test/end_to_end_test.cc b/test/end_to_end_test.cc
index 77328b6..162a7c7 100644
--- a/test/end_to_end_test.cc
+++ b/test/end_to_end_test.cc
@@ -10,6 +10,7 @@
  */
 
 #include <memory>
+#include <ostream>
 
 #include "third_party/googletest/src/googletest/include/gtest/gtest.h"
 
diff --git a/test/fft_test.cc b/test/fft_test.cc
index e24e451..8643805 100644
--- a/test/fft_test.cc
+++ b/test/fft_test.cc
@@ -13,6 +13,7 @@
 
 #include <algorithm>
 #include <complex>
+#include <ostream>
 #include <vector>
 
 #include "aom_dsp/fft_common.h"
diff --git a/test/function_equivalence_test.h b/test/function_equivalence_test.h
index f270689..a299c48 100644
--- a/test/function_equivalence_test.h
+++ b/test/function_equivalence_test.h
@@ -12,6 +12,8 @@
 #ifndef AOM_TEST_FUNCTION_EQUIVALENCE_TEST_H_
 #define AOM_TEST_FUNCTION_EQUIVALENCE_TEST_H_
 
+#include <ostream>
+
 #include "third_party/googletest/src/googletest/include/gtest/gtest.h"
 #include "test/acm_random.h"
 #include "test/clear_system_state.h"
diff --git a/test/gf_max_pyr_height_test.cc b/test/gf_max_pyr_height_test.cc
index 7f4c764..f4605dc 100644
--- a/test/gf_max_pyr_height_test.cc
+++ b/test/gf_max_pyr_height_test.cc
@@ -9,6 +9,8 @@
  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  */
 
+#include <ostream>
+
 #include "third_party/googletest/src/googletest/include/gtest/gtest.h"
 #include "test/codec_factory.h"
 #include "test/encode_test_driver.h"
diff --git a/test/hadamard_test.cc b/test/hadamard_test.cc
index e331556..15ea18a 100644
--- a/test/hadamard_test.cc
+++ b/test/hadamard_test.cc
@@ -9,6 +9,7 @@
  */
 
 #include <algorithm>
+#include <ostream>
 
 #include "third_party/googletest/src/googletest/include/gtest/gtest.h"
 
diff --git a/test/horz_superres_test.cc b/test/horz_superres_test.cc
index d731ab5..88f41b3 100644
--- a/test/horz_superres_test.cc
+++ b/test/horz_superres_test.cc
@@ -10,6 +10,7 @@
  */
 
 #include <memory>
+#include <ostream>
 
 #include "third_party/googletest/src/googletest/include/gtest/gtest.h"
 
diff --git a/test/invalid_file_test.cc b/test/invalid_file_test.cc
index 5951d6e..dd0956d 100644
--- a/test/invalid_file_test.cc
+++ b/test/invalid_file_test.cc
@@ -10,6 +10,7 @@
  */
 
 #include <cstdio>
+#include <ostream>
 #include <string>
 
 #include "third_party/googletest/src/googletest/include/gtest/gtest.h"
diff --git a/test/rt_end_to_end_test.cc b/test/rt_end_to_end_test.cc
index 90f7ccb..49ae1db 100644
--- a/test/rt_end_to_end_test.cc
+++ b/test/rt_end_to_end_test.cc
@@ -10,6 +10,7 @@
  */
 
 #include <memory>
+#include <ostream>
 #include <string>
 #include <unordered_map>
 
diff --git a/test/variance_test.cc b/test/variance_test.cc
index 8f525b6..900f5ac 100644
--- a/test/variance_test.cc
+++ b/test/variance_test.cc
@@ -11,6 +11,7 @@
 
 #include <cstdlib>
 #include <new>
+#include <ostream>
 
 #include "third_party/googletest/src/googletest/include/gtest/gtest.h"
 
diff --git a/test/yuv_temporal_filter_test.cc b/test/yuv_temporal_filter_test.cc
index e1dc177..60bd414 100644
--- a/test/yuv_temporal_filter_test.cc
+++ b/test/yuv_temporal_filter_test.cc
@@ -9,6 +9,8 @@
  * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
  */
 
+#include <ostream>
+
 #include "third_party/googletest/src/googletest/include/gtest/gtest.h"
 
 #include "config/av1_rtcd.h"