Add text autosizing override in the inspector.

Source/core/inspector/InspectorPageAgent.cpp

Index: Source/core/inspector/InspectorPageAgent.cpp
diff --git a/Source/core/inspector/InspectorPageAgent.cpp b/Source/core/inspector/InspectorPageAgent.cpp
index 3a5b287aaf58cb2f451cda2869fb6fc27dcc76f7..96c374bfa7aef2865597161d7d3a2987e9ce68a4 100644
--- a/Source/core/inspector/InspectorPageAgent.cpp
+++ b/Source/core/inspector/InspectorPageAgent.cpp
@@ -659,8 +659,10 @@ void InspectorPageAgent::setDocumentContent(ErrorString* errorString, const Stri
     DOMPatchSupport::patchDocument(*document, html);
 }
 
-void InspectorPageAgent::setDeviceMetricsOverride(ErrorString* errorString, int width, int height, double deviceScaleFactor, bool fitWindow)
+void InspectorPageAgent::setDeviceMetricsOverride(ErrorString* errorString, int width, int height, double deviceScaleFactor, bool fitWindow, int textAutosizingOverride)
 {
+    fprintf(stderr, "setting device metrics override to %d\n", textAutosizingOverride);
+
     const static long maxDimension = 10000000;
 
     if (width < 0 || height < 0 || width > maxDimension || height > maxDimension) {