Revert of Convert Widevine and Android platform key systems to KeySystemProperties

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index 23741dbf918b084f161a88efc722bc5f047b452c..3be44db4e3ac995486403a314e04a0ce71f7ab86 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -1243,11 +1243,6 @@
 
 void ChromeContentRendererClient::AddKeySystems(
     std::vector<media::KeySystemInfo>* key_systems) {
-  AddChromeKeySystemsInfo(key_systems);
-}
-
-void ChromeContentRendererClient::AddSupportedKeySystems(
-    std::vector<std::unique_ptr<::media::KeySystemProperties>>* key_systems) {
   AddChromeKeySystems(key_systems);
 }