VEA unittest: fix cache line-alignment test hang issue

media/gpu/video_encode_accelerator_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <inttypes.h>
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 2095 matching lines @@
 
   encoder_thread.task_runner()->PostTask(
       FROM_HERE,
       base::Bind(&TestClient::CreateEncoder, base::Unretained(client.get())));
 
   // Encoder must pass through states in this order.
   enum ClientState state_transitions[] = {CS_INITIALIZED, CS_ENCODING,
                                           CS_FINISHED};
 
   for (const auto& state : state_transitions) {
-    EXPECT_EQ(state, note->Wait());
+    ClientState wait_state = note->Wait();
+    EXPECT_EQ(state, wait_state);
+    if (state != wait_state) {
+      break;
+    }
   }
 
   encoder_thread.task_runner()->PostTask(
       FROM_HERE,
       base::Bind(&TestClient::DestroyEncoder, base::Unretained(client.get())));
 
   // This ensures all tasks have finished.
   encoder_thread.Stop();
 }
 
@@ skipping 196 matching lines @@
 
   media::g_env =
       reinterpret_cast<media::VideoEncodeAcceleratorTestEnvironment*>(
           testing::AddGlobalTestEnvironment(
               new media::VideoEncodeAcceleratorTestEnvironment(
                   std::move(test_stream_data), log_path, run_at_fps,
                   needs_encode_latency, verify_all_output)));
 
   return RUN_ALL_TESTS();
 }