Restrict use of hardware-secure codecs based on the RendererPreference.

components/html_viewer/html_document.cc

Index: components/html_viewer/html_document.cc
diff --git a/components/html_viewer/html_document.cc b/components/html_viewer/html_document.cc
index 227dae3280360905fbce1ceccaabcbc185e17b14..b9223904d3a2530e33e11c49bd1261b132547ed6 100644
--- a/components/html_viewer/html_document.cc
+++ b/components/html_viewer/html_document.cc
@@ -109,6 +109,12 @@ bool CanNavigateLocally(blink::WebFrame* frame,
   return false;
 }
 
+bool AreSecureCodecsSupported() {
+  // Hardware-secure codecs are not currently supported by HTML Viewer on any
+  // platform.
+  return false;
+}
+
 }  // namespace
 
 HTMLDocument::HTMLDocument(
@@ -328,7 +334,8 @@ void HTMLDocument::didNavigateWithinPage(
 blink::WebEncryptedMediaClient* HTMLDocument::encryptedMediaClient() {
   if (!web_encrypted_media_client_) {
     web_encrypted_media_client_.reset(new media::WebEncryptedMediaClientImpl(
-        GetCdmFactory(), GetMediaPermission()));
+        base::Bind(&AreSecureCodecsSupported), GetCdmFactory(),
+        GetMediaPermission()));
   }
   return web_encrypted_media_client_.get();
 }