Resize DevTools target frames.

third_party/WebKit/Source/core/inspector/browser_protocol.json

 {
     "version": { "major": "1", "minor": "1" },
     "domains": [{
         "domain": "Inspector",
         "experimental": true,
         "types": [],
         "commands": [
             {
                 "name": "enable",
                 "description": "Enables inspector domain notifications.",
@@ skipping 740 matching lines @@
                 "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": "setVisibleSize",
+                "description": "Resizes the frame/viewport of the page. Note that this does not affect the frame's container (e.g. browser window). Can be used to produce screenshots of the specified size. Not supported on Android.",
+                "parameters": [
+                    { "name": "width", "type": "integer", "description": "Frame width (DIP)." },

[Sami, 2016/08/22 13:42:12]

nit: Visible width/height instead of frame width/height?

+                    { "name": "height", "type": "integer", "description": "Frame height (DIP)." }
+                ],
+                "handlers": ["browser"]
+            },
+            {
                 "name": "setScriptExecutionDisabled",
                 "description": "Switches script execution in the page.",
                 "parameters": [
                     { "name": "value", "type": "boolean", "description": "Whether script execution should be disabled in the page." }
                 ]
             },
             {
                 "name": "setGeolocationOverride",
                 "description": "Overrides the Geolocation Position or Error. Omitting any of the parameters emulates position unavailable.",
                 "parameters": [
@@ skipping 3712 matching lines @@
                 "description": "Informs that port was successfully bound and got a specified connection id.",
                 "parameters": [
                     {"name": "port", "type": "integer", "description": "Port number that was successfully bound." },
                     {"name": "connectionId", "type": "string", "description": "Connection id to be used." }
                 ],
                 "handlers": ["browser"]
             }
         ]
     }]
 }