DevTools: Add sendOverProtocol() method for protocol debugging

third_party/WebKit/Source/devtools/front_end/main/Main.js

Index: third_party/WebKit/Source/devtools/front_end/main/Main.js
diff --git a/third_party/WebKit/Source/devtools/front_end/main/Main.js b/third_party/WebKit/Source/devtools/front_end/main/Main.js
index 8c8748bfb858a998fbaaa0c822000a21fe0a9695..eaa5c05ceae1b06b0456bc8e3410d89e168613d5 100644
--- a/third_party/WebKit/Source/devtools/front_end/main/Main.js
+++ b/third_party/WebKit/Source/devtools/front_end/main/Main.js
@@ -973,6 +973,23 @@ WebInspector.Main.InspectedNodeRevealer.prototype = {
     }
 }
 
+/**
+ * @param {string} method
+ * @param {?Object} params
+ * @return {!Promise}
+ */
+WebInspector.sendOverProtocol = function(method, params)
+{
+    var connection = WebInspector.targetManager.mainTarget().connection();
+    return new Promise((resolve, reject) => {
+        connection.sendRawMessageForTesting(method, params, (err, result) => {
+            if (err)
+                return reject(err);
+            return resolve(result);
+        });
+    });
+}
+
 /**
  * @constructor
  * @extends {WebInspector.VBox}