Disable four failing tests

Disable the following four failing tests:
AV1/ForwardKeyPresenceTestLarge.ForwardKeyEncodePresenceTest/*
AV1/ForcedKeyTestLarge.ForcedFrameIsKey/*
AV1/ForcedKeyTestLarge.ForcedFrameIsKeyCornerCases/*
AV1/ForcedKeyTestLarge.Frame1IsKey/*

BUG=aomedia:2803,aomedia:2804,aomedia:2805,aomedia:2806

Change-Id: I1932a86657a1b1ed6a6e6572295c9693d9d81412

test/fwd_kf_test.cc

diff --git a/test/fwd_kf_test.cc b/test/fwd_kf_test.cc
index edacf6c..88cd0ba 100644
--- a/test/fwd_kf_test.cc
+++ b/test/fwd_kf_test.cc
@@ -180,7 +180,8 @@
   aom_rc_mode end_usage_check_;
 };
 
-TEST_P(ForwardKeyPresenceTestLarge, ForwardKeyEncodePresenceTest) {
+// TODO(crbug.com/aomedia/2807): Fix and re-enable the test.
+TEST_P(ForwardKeyPresenceTestLarge, DISABLED_ForwardKeyEncodePresenceTest) {
   is_fwd_kf_present_ = 0;
   libaom_test::I420VideoSource video("hantro_collage_w352h288.yuv", 352, 288,
                                      cfg_.g_timebase.den, cfg_.g_timebase.num,

test/kf_test.cc

diff --git a/test/kf_test.cc b/test/kf_test.cc
index 0b36881..4a8eb86 100644
--- a/test/kf_test.cc
+++ b/test/kf_test.cc
@@ -180,7 +180,8 @@
   bool is_kf_placement_violated_;
 };
 
-TEST_P(ForcedKeyTestLarge, Frame1IsKey) {
+// TODO(crbug.com/aomedia/2810): Fix and re-enable the test.
+TEST_P(ForcedKeyTestLarge, DISABLED_Frame1IsKey) {
   const aom_rational timebase = { 1, 30 };
   const int lag_values[] = { 3, 15, 25, -1 };
 
@@ -200,7 +201,8 @@
 
 // This class checks the presence and placement of application
 // forced key frames.
-TEST_P(ForcedKeyTestLarge, ForcedFrameIsKey) {
+// TODO(crbug.com/aomedia/2808): Fix and re-enable the test.
+TEST_P(ForcedKeyTestLarge, DISABLED_ForcedFrameIsKey) {
   const aom_rational timebase = { 1, 30 };
   const int lag_values[] = { 3, 15, 25, -1 };
 
@@ -229,7 +231,8 @@
   }
 }
 
-TEST_P(ForcedKeyTestLarge, ForcedFrameIsKeyCornerCases) {
+// TODO(crbug.com/aomedia/2809): Fix and re-enable the test.
+TEST_P(ForcedKeyTestLarge, DISABLED_ForcedFrameIsKeyCornerCases) {
   const aom_rational timebase = { 1, 30 };
   const int kf_offsets[] = { -2, -1, 1, 2, 0 };
   cfg_.g_lag_in_frames = 35;