Revert "Add Support for WebM"

This reverts commit ab95cf27f1.

Change-Id: Ie78c2c14fa9b598b5ea67d6e9e60479e652b0b06

libwvdrmengine/src/WVDrmFactory.cpp

@@ -9,7 +9,6 @@
 #include "WVDrmFactory.h"
 
 #include "utils/Errors.h"
-#include "wv_cdm_constants.h"
 #include "WVCDMSingleton.h"
 #include "WVDrmPlugin.h"
 #include "WVUUID.h"
@@ -25,9 +24,8 @@ bool WVDrmFactory::isCryptoSchemeSupported(const uint8_t uuid[16]) {
 }
 
 bool WVDrmFactory::isContentTypeSupported(const String8 &mimeType) {
-  // Support ISO-BMFF (video/mp4) and WebM (video/webm).
-  return mimeType == wvcdm::ISO_BMFF_MIME_TYPE.c_str() ||
-         mimeType == wvcdm::WEBM_MIME_TYPE.c_str();
+  // For now, only ISO-BMFF is supported, which has MIME-type video/mp4
+  return mimeType == "video/mp4";
 }
 
 status_t WVDrmFactory::createDrmPlugin(const uint8_t uuid[16],