Use RecalcStyleDeferred for inspector style changes.

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 c08a5738caddfd6a7cedd663feb63d3dc2bac96d..811967c1b869bb282aaaa26127e2bd689135874b 100644
--- a/Source/core/inspector/InspectorPageAgent.cpp
+++ b/Source/core/inspector/InspectorPageAgent.cpp
@@ -1157,7 +1157,7 @@ void InspectorPageAgent::updateViewMetrics(bool enabled, int width, int height,
 
     Document* document = mainFrame()->document();
     if (document) {
-        document->styleResolverChanged(RecalcStyleImmediately);
+        document->styleResolverChanged(RecalcStyleDeferred);
         document->mediaQueryAffectingValueChanged();
     }
     InspectorInstrumentation::mediaQueryResultChanged(document);
@@ -1224,7 +1224,7 @@ void InspectorPageAgent::setEmulatedMedia(ErrorString*, const String& media)
         document = m_page->mainFrame()->document();
     if (document) {
         document->mediaQueryAffectingValueChanged();
-        document->styleResolverChanged(RecalcStyleImmediately);
+        document->styleResolverChanged(RecalcStyleDeferred);
         document->updateLayout();

[rune, 2014/05/18 10:28:43]

I don't think this updateLayout() call needs to be here. We should be more
explicit about why, when we need an updated layout.

[ojan, 2014/05/18 17:50:39]

My guess is that it's there to trigger this code:
https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit...

That said, I don't see why we would need to trigger that code.

     }
 }