media/gpu/vea_tests: Set longer event timeout in Bitrate test

There are a few failures due to the timeout of waiting during
BitrateCheck test. This CL increase the event timeout in the
test case as well as in DynamicFramerate/Bitratechange tests.

Bug: b:170790027
Test: None
Change-Id: If77dd5f645af0d9ea9edf19eb3271c6dfaf47770
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2517236
Commit-Queue: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: David Staessens <dstaessens@chromium.org>
Cr-Commit-Position: refs/heads/master@{#824287}

media/gpu/video_encode_accelerator_tests.cc

@@ -89,6 +89,10 @@ constexpr base::FilePath::CharType kDefaultTestVideoPath[] =
 constexpr size_t kNumFramesToEncodeForBitrateCheck = 300;
 // Tolerance factor for how encoded bitrate can differ from requested bitrate.
 constexpr double kBitrateTolerance = 0.1;
+// The event timeout used in bitrate check tests because encoding 2160p and
+// validating |kNumFramesToEncodeBitrateCheck| frames take much time.
+constexpr base::TimeDelta kBitrateCheckEventTimeout =
+    base::TimeDelta::FromSeconds(180);
 
 media::test::VideoEncoderTestEnvironment* g_env;
 
@@ -298,6 +302,9 @@ TEST_F(VideoEncoderTest, BitrateCheck) {
   auto config = GetDefaultConfig();
   config.num_frames_to_encode = kNumFramesToEncodeForBitrateCheck;
   auto encoder = CreateVideoEncoder(g_env->Video(), config);
+  // Set longer event timeout than the default (30 sec) because encoding 2160p
+  // and validating the stream take much time.
+  encoder->SetEventWaitTimeout(kBitrateCheckEventTimeout);
 
   encoder->Encode();
   EXPECT_TRUE(encoder->WaitForFlushDone());
@@ -315,7 +322,7 @@ TEST_F(VideoEncoderTest, DynamicBitrateChange) {
   auto encoder = CreateVideoEncoder(g_env->Video(), config);
   // Set longer event timeout than the default (30 sec) because encoding 2160p
   // and validating the stream take much time.
-  encoder->SetEventWaitTimeout(base::TimeDelta::FromSeconds(180));
+  encoder->SetEventWaitTimeout(kBitrateCheckEventTimeout);
 
   // Encode the video with the first bitrate.
   const uint32_t first_bitrate = config.bitrate;
@@ -346,7 +353,7 @@ TEST_F(VideoEncoderTest, DynamicFramerateChange) {
   auto encoder = CreateVideoEncoder(g_env->Video(), config);
   // Set longer event timeout than the default (30 sec) because encoding 2160p
   // and validating the stream take much time.
-  encoder->SetEventWaitTimeout(base::TimeDelta::FromSeconds(180));
+  encoder->SetEventWaitTimeout(kBitrateCheckEventTimeout);
 
   // Encode the video with the first framerate.
   const uint32_t first_framerate = config.framerate;