[inspector] Make InspectorTest.sendCommand* private

test/inspector/debugger/set-script-source.js

Index: test/inspector/debugger/set-script-source.js
diff --git a/test/inspector/debugger/set-script-source.js b/test/inspector/debugger/set-script-source.js
index 8e58503357e78373c5d661fbac09d411d1a0c154..36944cca6c18dd18afd514b20eeb569b982746fb 100644
--- a/test/inspector/debugger/set-script-source.js
+++ b/test/inspector/debugger/set-script-source.js
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-InspectorTest.evaluateInPage(
+InspectorTest.addScript(
 `function TestExpression(a, b) {
     return a + b;
 }`);
@@ -62,7 +62,8 @@ function runRequestSeries(step) {
       }
       processStep(next);
     }
-    InspectorTest.sendCommand(currentStep.command, currentStep.params, innerCallback);
+    var command = currentStep.command.split(".");
+    Protocol[command[0]][command[1]](currentStep.params).then(innerCallback);
   }
 }