Adding Navigation Throttles to DevTools

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 f4a2de95d5902101f8e438b48af95ec9cb40b42d..0ff1cafdc141e29624443d32c6ee2304f0fa663a 100644
--- a/third_party/WebKit/Source/core/inspector/browser_protocol.json
+++ b/third_party/WebKit/Source/core/inspector/browser_protocol.json
@@ -174,6 +174,13 @@
                   { "name": "column", "type": "integer", "description": "Error column." }
                 ],
                 "hidden": true
+            },
+            {
+                "id": "NavigationResponse",
+                "description": "Proceed: allow the navigation; Cancel: cancel the navigation; CancelAndIgnore: cancels the navigation and makes the requester of the navigation acts like the request was never made.",
+                "type": "string",
+                "enum": ["Proceed", "Cancel", "CancelAndIgnore"],
+                "hidden": true
             }
         ],
         "commands": [
@@ -481,6 +488,25 @@
                 "parameters": [
                     { "name": "threshold", "type": "number", "description": "If set to a positive number, specifies threshold in seconds for input event latency that will cause a console warning about blocked event to be issued. If zero or less, the warning is disabled." }
                 ]
+            },
+            {
+                "name": "setControlNavigations",
+                "parameters": [
+                    { "name": "enabled", "type": "boolean" }
+                ],
+                "description": "Toggles navigation throttling which allows programatic control over navigation and redirect response.",
+                "hidden": true,
+                "handlers": ["browser"]
+            },
+            {
+                "name": "processNavigation",
+                "parameters": [
+                    { "name": "response", "$ref": "NavigationResponse" },
+                    { "name": "navigationId", "type": "integer" }
+                ],
+                "description": "Should be sent in response to a navigationRequested or a redirectRequested event, telling the browser how to handle the navigation.",
+                "hidden": true,
+                "handlers": ["browser"]
             }
         ],
         "events": [
@@ -612,6 +638,17 @@
                 "description": "Fired when interstitial page was hidden",
                 "hidden": true,
                 "handlers": ["browser"]
+            },
+            {
+                "name": "navigationRequested",
+                "description": "Fired when a navigation is started if navigation throttles are enabled.  The navigation will be deferred until processNavigation is called.",
+                "parameters": [
+                    { "name": "isInMainFrame", "type": "boolean", "description": "Whether the navigation is taking place in the main frame or in a subframe." },
+                    { "name": "isRedirect", "type": "boolean", "description": "Whether the navigation has encountered a server redirect or not." },
+                    { "name": "navigationId", "type": "integer" },
+                    { "name": "url", "type": "string", "description": "URL of requested navigation." }
+                ],
+                "handlers": ["browser"]
             }
         ]
     },