Use the setting to determine whether showing context menu on mouse up.

Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 517 matching lines @@
         hideSelectPopup();
     }
 
     if (m_pagePopup && pagePopup && m_pagePopup->hasSamePopupClient(pagePopup.get())) {
         // That click triggered a page popup that is the same as the one we just closed.
         // It needs to be closed.
         closePagePopup(m_pagePopup.get());
     }
 
     // Dispatch the contextmenu event regardless of if the click was swallowed.
-#if OS(WIN)
-    // On Windows, we handle it on mouse up, not down.
-#elif OS(MACOSX)
-    if (event.button == WebMouseEvent::ButtonRight
-        || (event.button == WebMouseEvent::ButtonLeft
-            && event.modifiers & WebMouseEvent::ControlKey))
-        mouseContextMenu(event);
+    if (!page()->settings().showContextMenuOnMouseUp()) {
+#if OS(MACOSX)
+        if (event.button == WebMouseEvent::ButtonRight
+            || (event.button == WebMouseEvent::ButtonLeft
+                && event.modifiers & WebMouseEvent::ControlKey))
+            mouseContextMenu(event);
 #else
-    if (event.button == WebMouseEvent::ButtonRight)
-        mouseContextMenu(event);
+        if (event.button == WebMouseEvent::ButtonRight)
+            mouseContextMenu(event);
 #endif
+    }
 }
 
 void WebViewImpl::mouseContextMenu(const WebMouseEvent& event)
 {
     if (!mainFrameImpl() || !mainFrameImpl()->frameView())
         return;
 
     m_page->contextMenuController().clearContextMenu();
 
     PlatformMouseEventBuilder pme(mainFrameImpl()->frameView(), event);
@@ skipping 19 matching lines @@
     targetLocalFrame->eventHandler().sendContextMenuEvent(pme);
     m_contextMenuAllowed = false;
     // Actually showing the context menu is handled by the ContextMenuClient
     // implementation...
 }
 
 void WebViewImpl::handleMouseUp(LocalFrame& mainFrame, const WebMouseEvent& event)
 {
     PageWidgetEventHandler::handleMouseUp(mainFrame, event);
 
-#if OS(WIN)
-    // Dispatch the contextmenu event regardless of if the click was swallowed.
-    // On Mac/Linux, we handle it on mouse down, not up.
-    if (event.button == WebMouseEvent::ButtonRight)
-        mouseContextMenu(event);
-#endif
+    if (page()->settings().showContextMenuOnMouseUp()) {
+        // Dispatch the contextmenu event regardless of if the click was swallowed.
+        // On Mac/Linux, we handle it on mouse down, not up.
+        if (event.button == WebMouseEvent::ButtonRight)
+            mouseContextMenu(event);
+    }
 }
 
 bool WebViewImpl::handleMouseWheel(LocalFrame& mainFrame, const WebMouseWheelEvent& event)
 {
     hidePopups();
     return PageWidgetEventHandler::handleMouseWheel(mainFrame, event);
 }
 
 bool WebViewImpl::scrollBy(const WebFloatSize& delta, const WebFloatSize& velocity)
 {
@@ skipping 3946 matching lines @@
     return mainFrameImpl()->frameView()->layoutSize().width() == m_size.width
         || (constraints.minimumScale == constraints.maximumScale && constraints.minimumScale != -1);
 }
 
 void WebViewImpl::forceNextWebGLContextCreationToFail()
 {
     WebGLRenderingContext::forceNextWebGLContextCreationToFail();
 }
 
 } // namespace blink