[DevTools] Cleanup inspector overlay and make it work with virtual viewport.

Source/web/WebDevToolsAgentImpl.cpp

Index: Source/web/WebDevToolsAgentImpl.cpp
diff --git a/Source/web/WebDevToolsAgentImpl.cpp b/Source/web/WebDevToolsAgentImpl.cpp
index cdf90489e6395920060bb36a1c3dbbad56e4d315..d37b4e395840169a2def94f0a4dc7b8c3d42c471 100644
--- a/Source/web/WebDevToolsAgentImpl.cpp
+++ b/Source/web/WebDevToolsAgentImpl.cpp
@@ -232,7 +232,6 @@ void WebDevToolsAgentImpl::attach()
         return;
 
     inspectorController()->connectFrontend(this);
-    inspectorController()->webViewResized(m_webViewImpl->size());
     blink::Platform::current()->currentThread()->addTaskObserver(this);
     m_attached = true;
 }
@@ -298,12 +297,6 @@ void WebDevToolsAgentImpl::didCreateScriptContext(WebLocalFrameImpl* webframe, i
         frame->script().setContextDebugId(m_hostId);
 }
 
-void WebDevToolsAgentImpl::webViewResized(const WebSize& size)
-{
-    if (InspectorController* ic = inspectorController())
-        ic->webViewResized(IntSize());
-}
-
 bool WebDevToolsAgentImpl::handleInputEvent(WebCore::Page* page, const WebInputEvent& inputEvent)
 {
     if (!m_attached && !m_generatingEvent)