DevTools: rename initialUrl to url in the Browser.createTarget protocol method.

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

Index: third_party/WebKit/Source/core/inspector/browser_protocol.json
diff --git a/third_party/WebKit/Source/core/inspector/browser_protocol.json b/third_party/WebKit/Source/core/inspector/browser_protocol.json
index 7de6c22abb781d2e7c0831c8983fcf2f1256fc4e..f4a2de95d5902101f8e438b48af95ec9cb40b42d 100644
--- a/third_party/WebKit/Source/core/inspector/browser_protocol.json
+++ b/third_party/WebKit/Source/core/inspector/browser_protocol.json
@@ -4230,7 +4230,7 @@
                 "name": "createTarget",
                 "description": "Creates a new page.",
                 "parameters": [
-                    { "name": "initialUrl", "type": "string", "description": "The initial URL the page will be navigated to." },
+                    { "name": "url", "type": "string", "description": "The initial URL the page will be navigated to." },
                     { "name": "width", "type": "integer", "description": "Window width (headless chrome only).", "optional": true },
                     { "name": "height", "type": "integer", "description": "Window height (headless chrome only).", "optional": true },
                     { "name": "browserContextId", "$ref": "BrowserContextID", "description": "The browser context to create the page in (headless chrome only).", "optional": true }