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 ae28ea813655d2e695445076b0b73379b4221862..e684cb08e42019a44d99fc06b256e69bb3c3ed2e 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) {