Share schemes needed for mixed content checking between the browser and renderer.

android_webview/common/aw_content_client.cc

Index: android_webview/common/aw_content_client.cc
diff --git a/android_webview/common/aw_content_client.cc b/android_webview/common/aw_content_client.cc
index 5f366e8909abea2b3ccd5825b9c678ea5727812b..6acfe16bc6d622dce8793bda49dc01b64515ff6a 100644
--- a/android_webview/common/aw_content_client.cc
+++ b/android_webview/common/aw_content_client.cc
@@ -7,6 +7,7 @@
 #include "android_webview/common/aw_media_client_android.h"
 #include "android_webview/common/aw_resource.h"
 #include "android_webview/common/aw_version_info_values.h"
+#include "android_webview/common/url_constants.h"
 #include "base/command_line.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/user_agent.h"
@@ -37,6 +38,12 @@ std::string GetExtraOSUserAgentInfo() {
   return "; wv";
 }
 
+void AwContentClient::AddAdditionalSchemes(Schemes* schemes) {
+  schemes->local_schemes.push_back(url::kContentScheme);
+  schemes->secure_schemes.push_back(
+      android_webview::kAndroidWebViewVideoPosterScheme);
+}
+
 std::string AwContentClient::GetProduct() const {
   return android_webview::GetProduct();
 }