Register WideVine keysystem for WebView.

android_webview/renderer/aw_content_renderer_client.cc

Index: android_webview/renderer/aw_content_renderer_client.cc
diff --git a/android_webview/renderer/aw_content_renderer_client.cc b/android_webview/renderer/aw_content_renderer_client.cc
index cf65c39bfb36f86c18c7b0b379737e4db49cde18..7428b1d6ad4c8f8ff32a6dae65ead07aea23c9db 100644
--- a/android_webview/renderer/aw_content_renderer_client.cc
+++ b/android_webview/renderer/aw_content_renderer_client.cc
@@ -6,6 +6,7 @@
 
 #include "android_webview/common/aw_resource.h"
 #include "android_webview/common/url_constants.h"
+#include "android_webview/renderer/aw_key_systems.h"
 #include "android_webview/renderer/aw_render_view_ext.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/utf_string_conversions.h"
@@ -107,4 +108,9 @@ bool AwContentRendererClient::IsLinkVisited(unsigned long long link_hash) {
   return visited_link_slave_->IsVisited(link_hash);
 }
 
+void AwContentRendererClient::AddKeySystems(
+    std::vector<content::KeySystemInfo>* key_systems) {
+  AwAddKeySystems(key_systems);
+}
+
 }  // namespace android_webview