Add page coordinates to the ViewportAPI

third_party/WebKit/Source/core/frame/DOMVisualViewport.cpp

Index: third_party/WebKit/Source/core/frame/DOMVisualViewport.cpp
diff --git a/third_party/WebKit/Source/core/frame/DOMVisualViewport.cpp b/third_party/WebKit/Source/core/frame/DOMVisualViewport.cpp
index 2eae2a1878b4e91e7ccdab438068bb4be18efcf3..d27936f47e05d3a645794a5837094b665e36a55c 100644
--- a/third_party/WebKit/Source/core/frame/DOMVisualViewport.cpp
+++ b/third_party/WebKit/Source/core/frame/DOMVisualViewport.cpp
@@ -28,6 +28,7 @@
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/frame/FrameHost.h"
+#include "core/frame/FrameView.h"
 #include "core/frame/LocalDOMWindow.h"
 #include "core/frame/LocalFrame.h"
 #include "core/frame/VisualViewport.h"
@@ -85,6 +86,36 @@ double DOMVisualViewport::scrollTop()
     return 0;
 }
 
+double DOMVisualViewport::pageX()
+{
+    LocalFrame* frame = m_window->frame();
+    if (!frame)
+        return 0;
+
+    FrameView* view = frame->view();
+    if (!view)
+        return 0;
+
+    frame->document()->updateStyleAndLayoutIgnorePendingStylesheets();
+    double viewportX = view->getScrollableArea()->scrollPositionDouble().x();
+    return adjustScrollForAbsoluteZoom(viewportX, frame->pageZoomFactor());
+}
+
+double DOMVisualViewport::pageY()
+{
+    LocalFrame* frame = m_window->frame();
+    if (!frame)
+        return 0;
+
+    FrameView* view = frame->view();
+    if (!view)
+        return 0;
+
+    frame->document()->updateStyleAndLayoutIgnorePendingStylesheets();
+    double viewportY = view->getScrollableArea()->scrollPositionDouble().y();
+    return adjustScrollForAbsoluteZoom(viewportY, frame->pageZoomFactor());
+}
+
 double DOMVisualViewport::clientWidth()
 {
     LocalFrame* frame = m_window->frame();