[DevTools] Update media queries when resizing with emulation on.

Source/web/WebViewImpl.cpp

Index: Source/web/WebViewImpl.cpp
diff --git a/Source/web/WebViewImpl.cpp b/Source/web/WebViewImpl.cpp
index 02f3e15eae35cc7fb3f648598f313663cb012b3a..6eb2a90527e8168d66ec8336fc6f94ae7b7154e9 100644
--- a/Source/web/WebViewImpl.cpp
+++ b/Source/web/WebViewImpl.cpp
@@ -1619,6 +1619,9 @@ void WebViewImpl::resize(const WebSize& newSize)
 
         if (pinchVirtualViewportEnabled())
             page()->frameHost().pinchViewport().setSize(m_size);
+
+        if (page()->inspectorController().deviceEmulationEnabled() && mainFrameImpl()->frame()->document())

[apavlov, 2014/05/30 14:13:53]

Not sure if it is worth it, but in our instrumentation code we use (or used to
use?) something similar to:

if (page()->inspectorController().deviceEmulationEnabled()) {
    if (Document* document = mainFrameImpl()->frame()->document())
         document->mediaQueryAffectingValueChanged();
}

[ojan, 2014/05/31 05:32:39]

+1. We don't have an official style rule around this, but I prefer this style.
In the future if frame() or something gets a branch, then we don't unnecessarily
do the branch twice.

[dgozman, 2014/06/03 12:09:15]

Done.

+            mainFrameImpl()->frame()->document()->mediaQueryAffectingValueChanged();
     }
 
     if (settings()->viewportEnabled() && !m_fixedLayoutSizeLock) {