Support Android secure codecs in requestMediaKeySystemAccess().

android_webview/renderer/aw_key_systems.cc

Index: android_webview/renderer/aw_key_systems.cc
diff --git a/android_webview/renderer/aw_key_systems.cc b/android_webview/renderer/aw_key_systems.cc
index 29e50ce7ab534eba3da1919965aebf2625998535..cc3059e4a8b176fd9a7c7e607e8dfbb1aa3d7810 100644
--- a/android_webview/renderer/aw_key_systems.cc
+++ b/android_webview/renderer/aw_key_systems.cc
@@ -9,11 +9,7 @@ namespace android_webview {
 
 void AwAddKeySystems(
     std::vector<media::KeySystemInfo>* key_systems_info) {
-  // TODO(sandersd): Non-compositing support depends on the
-  // use_video_overlay_for_embedded_encrypted_video pref, which may differ per
-  // WebContents. For now, err on the side of registering support.
-  // http://crbug.com/467779
-  cdm::AddAndroidWidevine(key_systems_info, true);
+  cdm::AddAndroidWidevine(key_systems_info);
   cdm::AddAndroidPlatformKeySystems(key_systems_info);
 }