DevTools: Blackbox content scripts - backend support.

Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications."
@@ skipping 3378 matching lines @@
                 "returns": [
                     { "name": "callFrames", "type": "array", "items": { "$ref": "CallFrame" }, "description": "Call stack the virtual machine stopped on." },
                     { "name": "asyncStackTrace", "$ref": "StackTrace", "optional": true, "description": "Async stack trace, if any." }
                 ],
                 "hidden": true,
                 "description": "Returns call stack including variables changed since VM was paused. VM must be paused."
             },
             {
                 "name": "skipStackFrames",
                 "parameters": [
-                    { "name": "script", "optional": true, "type": "string", "description": "Regular expression defining the scripts to ignore while stepping." }
+                    { "name": "script", "type": "string", "optional": true, "description": "Regular expression defining the scripts to ignore while stepping." },
+                    { "name": "skipContentScripts", "type": "boolean", "optional": true, "description": "True, if all content scripts should be ignored." }
                 ],
                 "hidden": true,
                 "description": "Makes backend skip steps in the sources with names matching given pattern. VM will try leave blacklisted scripts by performing 'step in' several times, finally resorting to 'step out' if unsuccessful."
             },
             {
                 "name": "setAsyncCallStackDepth",
                 "parameters": [
                     { "name": "maxDepth", "type": "integer", "description": "Maximum depth of async call stacks. Setting to <code>0</code> will effectively disable collecting async call stacks (default)." }
                 ],
                 "hidden": true,
@@ skipping 953 matching lines @@
             {
                 "name": "dataAvailable",
                 "parameters": [
                     {"name": "value", "type": "array", "items": { "$ref": "PowerEvent" }, "description": "List of power events." }
                 ],
                 "handlers": ["browser", "frontend"]
             }
         ]
     }]
 }