add a new set of commands to resize and position windows

chrome/browser/devtools/devtools_protocol.cc

Index: chrome/browser/devtools/devtools_protocol.cc
diff --git a/chrome/browser/devtools/devtools_protocol.cc b/chrome/browser/devtools/devtools_protocol.cc
index a22811053180c073bdcfd1f65072d176f448765c..f52d8425c6ae5a8678cc5fc7ef0e58cf75ee2c1c 100644
--- a/chrome/browser/devtools/devtools_protocol.cc
+++ b/chrome/browser/devtools/devtools_protocol.cc
@@ -19,9 +19,7 @@ const char kParamsParam[] = "params";
 const char kResultParam[] = "result";
 
 // JSON RPC 2.0 spec: http://www.jsonrpc.org/specification#error_object
-enum Error {
-  kErrorInvalidParams = -32602
-};
+enum Error { kErrorInvalidParams = -32602, kErrorServerError = -32000 };
 
 }  // namespace
 
@@ -56,6 +54,18 @@ DevToolsProtocol::CreateInvalidParamsResponse(int command_id,
 }
 
 // static
+std::unique_ptr<base::DictionaryValue> DevToolsProtocol::CreateErrorResponse(
+    int command_id,
+    const std::string& error_message) {
+  std::unique_ptr<base::DictionaryValue> response(new base::DictionaryValue());
+  base::DictionaryValue* error_object = new base::DictionaryValue();
+  response->Set(kErrorParam, error_object);
+  error_object->SetInteger(kErrorCodeParam, kErrorServerError);
+  error_object->SetString(kErrorMessageParam, error_message);
+  return response;
+}
+
+// static
 std::unique_ptr<base::DictionaryValue> DevToolsProtocol::CreateSuccessResponse(
     int command_id,
     std::unique_ptr<base::DictionaryValue> result) {