Always pass arguments to INSTANTIATE_TEST_SUITE_P.

Passing an empty arg is working at the moment but it is not
guaranteed to continue to work in the future.

Bug: None
Change-Id: I975bc8779bac9700854de411301415338dcaf9f6
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/154820
Reviewed-by: Stefan Holmer <stefan@webrtc.org>
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#29343}
diff --git a/common_video/h264/sps_vui_rewriter_unittest.cc b/common_video/h264/sps_vui_rewriter_unittest.cc
index 6ec6dea..e008948 100644
--- a/common_video/h264/sps_vui_rewriter_unittest.cc
+++ b/common_video/h264/sps_vui_rewriter_unittest.cc
@@ -349,7 +349,7 @@
 }
 
 INSTANTIATE_TEST_SUITE_P(
-    ,
+    All,
     SpsVuiRewriterTest,
     ::testing::Values(
         std::make_tuple(kVuiNoFrameBuffering,
diff --git a/media/engine/webrtc_video_engine_unittest.cc b/media/engine/webrtc_video_engine_unittest.cc
index 98a0d9d..ca2d1a2 100644
--- a/media/engine/webrtc_video_engine_unittest.cc
+++ b/media/engine/webrtc_video_engine_unittest.cc
@@ -3450,7 +3450,7 @@
 }
 
 INSTANTIATE_TEST_SUITE_P(
-    ,
+    All,
     Vp9SettingsTestWithFieldTrial,
     ::testing::Values(
         std::make_tuple("", 1, 1, webrtc::InterLayerPredMode::kOnKeyPic),
diff --git a/video/quality_limitation_reason_tracker_unittest.cc b/video/quality_limitation_reason_tracker_unittest.cc
index 9756b36..c394535 100644
--- a/video/quality_limitation_reason_tracker_unittest.cc
+++ b/video/quality_limitation_reason_tracker_unittest.cc
@@ -105,7 +105,7 @@
 }
 
 INSTANTIATE_TEST_SUITE_P(
-    ,
+    All,
     QualityLimitationReasonTrackerTestWithParamReason,
     ::testing::Values(QualityLimitationReason::kNone,       // "/0"
                       QualityLimitationReason::kCpu,        // "/1"