media: gpu: vea_unittest: fix alignment on non ARM platforms

media/gpu/video_encode_accelerator_unittest.cc

Index: media/gpu/video_encode_accelerator_unittest.cc
diff --git a/media/gpu/video_encode_accelerator_unittest.cc b/media/gpu/video_encode_accelerator_unittest.cc
index 07a8b1caa3bf8f7f926ef842b5026c7660e14ce4..5cc96a2765d08741e82481b479091c1ae6a2557c 100644
--- a/media/gpu/video_encode_accelerator_unittest.cc
+++ b/media/gpu/video_encode_accelerator_unittest.cc
@@ -165,7 +165,7 @@ int g_num_frames_to_encode = 0;
 // buffers.
 const size_t kPlatformBufferAlignment = 128;
 #else
-const size_t kPlatformBufferAlignment = 1;
+const size_t kPlatformBufferAlignment = 8;
 #endif
 
 inline static size_t AlignToPlatformRequirements(size_t value) {