[DevTools] Do not reset scroll when emulating device.

third_party/WebKit/Source/devtools/protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "hidden": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications.",
@@ skipping 656 matching lines @@
                     { "name": "positionY", "type": "integer", "optional": true, "description": "Overriding view Y position on screen in pixels (minimum 0, maximum 10000000). Only used for |mobile==true|." }
                 ],
                 "handlers": ["browser"]
             },
             {
                 "name": "clearDeviceMetricsOverride",
                 "description": "Clears the overriden device metrics.",
                 "handlers": ["browser"]
             },
             {
-                "name": "resetScrollAndPageScaleFactor",
-                "description": "Requests that scroll offsets and page scale factor are reset to initial values."
+                "name": "resetPageScaleFactor",
+                "description": "Requests that page scale factor is reset to initial values."
             },
             {
                 "name": "setPageScaleFactor",
                 "description": "Sets a specified page scale factor.",
                 "parameters": [
                     { "name": "pageScaleFactor", "type": "number", "description": "Page scale factor." }
                 ]
             },
             {
                 "name": "setScriptExecutionDisabled",
@@ skipping 4627 matching lines @@
                 ],
                 "returns": [
                     { "name": "accessibilityNode", "$ref": "AXNode", "description": "The <code>Accessibility.AXNode</code> for this DOM node, if it exists.", "optional": true }
                 ],
                 "description": "Fetches the accessibility node for this DOM node, if it exists.",
                 "hidden": true
             }
         ]
     }]
 }