Android: tidy up outdated version checks.

media/base/android/media_codec_util.cc

Index: media/base/android/media_codec_util.cc
diff --git a/media/base/android/media_codec_util.cc b/media/base/android/media_codec_util.cc
index 5b93fe2ba1e7ab8fbd5bec17c44e55f2544a1305..101d1696d873f328bf0064290f7f005fd563dfe6 100644
--- a/media/base/android/media_codec_util.cc
+++ b/media/base/android/media_codec_util.cc
@@ -372,10 +372,11 @@ bool MediaCodecUtil::IsPassthroughAudioFormat(AudioCodec codec) {
 bool MediaCodecUtil::CodecNeedsFlushWorkaround(MediaCodecBridge* codec) {
   int sdk_int = base::android::BuildInfo::GetInstance()->sdk_int();
   std::string codec_name = codec->GetName();
-  return sdk_int < 18 ||
-         (sdk_int == 18 && ("OMX.SEC.avc.dec" == codec_name ||
-                            "OMX.SEC.avc.dec.secure" == codec_name)) ||
-         (sdk_int == 19 &&
+  return sdk_int < SDK_VERSION_JELLY_BEAN_MR2 ||
+         (sdk_int == SDK_VERSION_JELLY_BEAN_MR2 &&
+          ("OMX.SEC.avc.dec" == codec_name ||
+           "OMX.SEC.avc.dec.secure" == codec_name)) ||
+         (sdk_int == SDK_VERSION_KITKAT &&
           base::StartsWith(base::android::BuildInfo::GetInstance()->model(),
                            "SM-G800", base::CompareCase::INSENSITIVE_ASCII) &&
           ("OMX.Exynos.avc.dec" == codec_name ||