Settings should not call into inspector

Source/core/rendering/FastTextAutosizer.cpp

Index: Source/core/rendering/FastTextAutosizer.cpp
diff --git a/Source/core/rendering/FastTextAutosizer.cpp b/Source/core/rendering/FastTextAutosizer.cpp
index 70c8732bbba6fb59282b1c336e9da270fa29b7ea..37979f9c8caf8e032a321b57c295068e20c88160 100644
--- a/Source/core/rendering/FastTextAutosizer.cpp
+++ b/Source/core/rendering/FastTextAutosizer.cpp
@@ -35,6 +35,7 @@
 #include "core/frame/Frame.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/Settings.h"
+#include "core/inspector/InspectorInstrumentation.h"
 #include "core/page/Page.h"
 #include "core/rendering/InlineIterator.h"
 #include "core/rendering/RenderBlock.h"
@@ -152,10 +153,10 @@ void FastTextAutosizer::inflate(RenderBlock* block)
 
 bool FastTextAutosizer::enabled()
 {
-    return m_document->settings()
-        && m_document->settings()->textAutosizingEnabled()
-        && !m_document->printing()
-        && m_document->page();
+    if (!m_document->settings() || !m_document->page() || m_document->printing())
+        return false;
+
+    return InspectorInstrumentation::overrideTextAutosizing(m_document->page(), m_document->settings()->textAutosizingEnabled());
 }
 
 void FastTextAutosizer::prepareRenderViewInfo(RenderView* renderView)
@@ -175,8 +176,10 @@ void FastTextAutosizer::prepareRenderViewInfo(RenderView* renderView)
     m_baseMultiplier = m_document->settings()->accessibilityFontScaleFactor();
     // If the page has a meta viewport or @viewport, don't apply the device scale adjustment.
     const ViewportDescription& viewportDescription = m_document->page()->mainFrame()->document()->viewportDescription();
-    if (!viewportDescription.isSpecifiedByAuthor())
-        m_baseMultiplier *= m_document->settings()->deviceScaleAdjustment();
+    if (!viewportDescription.isSpecifiedByAuthor()) {
+        float deviceScaleAdjustment = InspectorInstrumentation::overrideFontScaleFactor(m_document->page(), m_document->settings()->deviceScaleAdjustment());
+        m_baseMultiplier *= deviceScaleAdjustment;
+    }
 #ifndef NDEBUG
     m_renderViewInfoPrepared = true;
 #endif