Add "Request app banner" context menu in DevTools

chrome/browser/devtools/devtools_network_protocol_handler.cc

Index: chrome/browser/devtools/devtools_network_protocol_handler.cc
diff --git a/chrome/browser/devtools/devtools_network_protocol_handler.cc b/chrome/browser/devtools/devtools_network_protocol_handler.cc
index 2b7ca3c011d84fe8d26506e70bad0cd8c339e364..72312e209802ac2e82f9d51274db083cd721fc1a 100644
--- a/chrome/browser/devtools/devtools_network_protocol_handler.cc
+++ b/chrome/browser/devtools/devtools_network_protocol_handler.cc
@@ -22,13 +22,9 @@ DevToolsNetworkProtocolHandler::~DevToolsNetworkProtocolHandler() {
 
 base::DictionaryValue* DevToolsNetworkProtocolHandler::HandleCommand(
     content::DevToolsAgentHost* agent_host,
-    base::DictionaryValue* command_dict) {
-  int id = 0;
-  std::string method;
-  base::DictionaryValue* params = nullptr;
-  if (!DevToolsProtocol::ParseCommand(command_dict, &id, &method, &params))
-    return nullptr;
-
+    int id,
+    const std::string& method,
+    base::DictionaryValue* params) {
   namespace network = ::chrome::devtools::Network;
 
   if (method == network::emulateNetworkConditions::kName)