Implement <select> Popup Menu using PagePopup

Source/web/WebPagePopupImpl.cpp

Index: Source/web/WebPagePopupImpl.cpp
diff --git a/Source/web/WebPagePopupImpl.cpp b/Source/web/WebPagePopupImpl.cpp
index 9909058018d3d260c3c93a2571702f591f790475..b01f75fad28f2e2c720009712bec23933b207849 100644
--- a/Source/web/WebPagePopupImpl.cpp
+++ b/Source/web/WebPagePopupImpl.cpp
@@ -48,6 +48,7 @@
 #include "modules/accessibility/AXObjectCacheImpl.h"
 #include "platform/EventDispatchForbiddenScope.h"
 #include "platform/LayoutTestSupport.h"
+#include "platform/ScriptForbiddenScope.h"
 #include "platform/TraceEvent.h"
 #include "platform/heap/Handle.h"
 #include "public/platform/WebCompositeAndReadbackAsyncCallback.h"
@@ -173,6 +174,12 @@ private:
             m_popup->m_webView->client()->postAccessibilityEvent(WebAXObject(obj), static_cast<WebAXEvent>(notification));
     }
 
+    virtual void setToolTip(const String& tooltipText, TextDirection dir) override
+    {
+        if (m_popup->m_webView->client())
+            m_popup->m_webView->client()->setToolTipText(tooltipText, toWebTextDirection(dir));
+    }
+
     WebPagePopupImpl* m_popup;
 };
 
@@ -255,9 +262,21 @@ bool WebPagePopupImpl::initializePage()
     RefPtr<SharedBuffer> data = SharedBuffer::create();
     m_popupClient->writeDocument(data.get());
     frame->loader().load(FrameLoadRequest(0, blankURL(), SubstituteData(data, "text/html", "UTF-8", KURL(), ForceSynchronousLoad)));
+
+    m_popupClient->didWriteDocument(*frame->document());
+
     return true;
 }
 
+void WebPagePopupImpl::postMessage(const String& message)
+{
+    if (!m_page)
+        return;
+    ScriptForbiddenScope::AllowUserAgentScript allowScript;
+    if (LocalDOMWindow* window = toLocalFrame(m_page->mainFrame())->localDOMWindow())
+        window->dispatchEvent(MessageEvent::create(message));
+}
+
 void WebPagePopupImpl::destroyPage()
 {
     if (!m_page)