Enable passing cast channel certificate authority keys.

extensions/browser/api/cast_channel/cast_channel_api.cc

Index: extensions/browser/api/cast_channel/cast_channel_api.cc
diff --git a/extensions/browser/api/cast_channel/cast_channel_api.cc b/extensions/browser/api/cast_channel/cast_channel_api.cc
index 9d711a48c0c7910804a435ce46cd76f4fa3ae8c6..87a78f944960114305426f6c8123c26ecc214b89 100644
--- a/extensions/browser/api/cast_channel/cast_channel_api.cc
+++ b/extensions/browser/api/cast_channel/cast_channel_api.cc
@@ -14,6 +14,7 @@
 #include "base/time/default_tick_clock.h"
 #include "base/values.h"
 #include "content/public/browser/browser_thread.h"
+#include "extensions/browser/api/cast_channel/cast_auth_util.h"
 #include "extensions/browser/api/cast_channel/cast_socket.h"
 #include "extensions/browser/api/cast_channel/logger.h"
 #include "extensions/browser/event_router.h"
@@ -510,4 +511,30 @@ void CastChannelGetLogsFunction::AsyncWorkStart() {
   AsyncWorkCompleted();
 }
 
+CastChannelSetAuthorityKeysFunction::CastChannelSetAuthorityKeysFunction() {
+}
+
+CastChannelSetAuthorityKeysFunction::~CastChannelSetAuthorityKeysFunction() {
+}
+
+bool CastChannelSetAuthorityKeysFunction::Prepare() {
+  params_ = cast_channel::SetAuthorityKeys::Params::Create(*args_);
+  EXTENSION_FUNCTION_VALIDATE(params_.get());
+  return true;
+}
+
+void CastChannelSetAuthorityKeysFunction::AsyncWorkStart() {
+  std::string& keys = params_->keys;
+  std::string& signature = params_->signature;
+  if (!signature.empty() && !keys.empty() &&
+      cast_channel::SetTrustedCertificateAuthorities(signature, keys)) {
+    // Intentionally returns a blank.
+    SetResult(new base::StringValue(std::string()));

[mark a. foltz, 2014/10/14 06:15:04]

What does the blank string signify?  If you just need to signal success by
firing an empty callback, you can invoke AsyncWorkCompleted().

[vadimgo, 2014/10/14 19:51:25]

Removed the result.

+  } else {
+    SetError("Unable to set authority keys.");
+  }
+
+  AsyncWorkCompleted();
+}
+
 }  // namespace extensions