Revert of Implement argument validation for chrome.cast.channel.{open,send}

chrome/browser/extensions/api/cast_channel/cast_channel_api.cc

Index: chrome/browser/extensions/api/cast_channel/cast_channel_api.cc
diff --git a/chrome/browser/extensions/api/cast_channel/cast_channel_api.cc b/chrome/browser/extensions/api/cast_channel/cast_channel_api.cc
index ae2d98d85ff19b821112c6a706b1f2cc38b2e460..d1a84e4a31261a8f61178ce6c93e854619311df5 100644
--- a/chrome/browser/extensions/api/cast_channel/cast_channel_api.cc
+++ b/chrome/browser/extensions/api/cast_channel/cast_channel_api.cc
@@ -280,8 +280,6 @@
       connect_info_.reset(new ConnectInfo);
       if (!ParseChannelUrl(GURL(cast_url), connect_info_.get())) {
         connect_info_.reset();
-        SetError("Invalid Cast URL " + cast_url);
-        return false;
       }
       break;
     case base::Value::TYPE_DICTIONARY:
@@ -290,17 +288,12 @@
     default:
       break;
   }
-  if (!connect_info_.get()) {
-    SetError("Invalid connect_info");
-    return false;
-  }
-  channel_auth_ = connect_info_->auth;
-  ip_endpoint_.reset(ParseConnectInfo(*connect_info_));
-  if (!ip_endpoint_.get()) {
-    SetError("Invalid connect_info");
-    return false;
-  }
-  return true;
+  if (connect_info_.get()) {
+    channel_auth_ = connect_info_->auth;
+    ip_endpoint_.reset(ParseConnectInfo(*connect_info_));
+    return ip_endpoint_.get() != NULL;
+  }
+  return false;
 }
 
 void CastChannelOpenFunction::AsyncWorkStart() {
@@ -326,26 +319,6 @@
 bool CastChannelSendFunction::Prepare() {
   params_ = Send::Params::Create(*args_);
   EXTENSION_FUNCTION_VALIDATE(params_.get());
-  if (params_->message.namespace_.empty()) {
-    SetError("message_info.namespace_ is required");
-    return false;
-  }
-  if (params_->message.source_id.empty()) {
-    SetError("message_info.source_id is required");
-    return false;
-  }
-  if (params_->message.destination_id.empty()) {
-    SetError("message_info.destination_id is required");
-    return false;
-  }
-  switch (params_->message.data->GetType()) {
-    case base::Value::TYPE_STRING:
-    case base::Value::TYPE_BINARY:
-      break;
-    default:
-      SetError("Invalid type of message_info.data");
-      return false;
-  }
   return true;
 }