Add text autosizing override in the inspector.

Source/devtools/protocol.json

Index: Source/devtools/protocol.json
diff --git a/Source/devtools/protocol.json b/Source/devtools/protocol.json
index 6c98c19887b6c70cc83cff7ce442b43867356337..a86ed68c903de1b10eeb9c3766171282d6b4939b 100644
--- a/Source/devtools/protocol.json
+++ b/Source/devtools/protocol.json
@@ -340,7 +340,8 @@
                     { "name": "width", "type": "integer", "description": "Overriding width value in pixels (minimum 0, maximum 10000000). 0 disables the override." },
                     { "name": "height", "type": "integer", "description": "Overriding height value in pixels (minimum 0, maximum 10000000). 0 disables the override." },
                     { "name": "deviceScaleFactor", "type": "number", "description": "Overriding device scale factor value (must be positive)." },
-                    { "name": "fitWindow", "type": "boolean", "description": "Whether a view that exceeds the available browser window area should be scaled down to fit." }
+                    { "name": "fitWindow", "type": "boolean", "description": "Whether a view that exceeds the available browser window area should be scaled down to fit." },
+                    { "name": "textAutosizing", "type": "boolean", "optional": true, "description": "Whether to override the text autosizing feature." }
                 ],
                 "hidden": true
             },