Use document's contentSize when the HTML element is selected.

Source/web/WebViewImpl.cpp

Index: Source/web/WebViewImpl.cpp
diff --git a/Source/web/WebViewImpl.cpp b/Source/web/WebViewImpl.cpp
index 3864f1e434b710a86a5094e2334c9fbe2d909701..820c38343069b5195e065e03e2b43e7fe17a4a85 100644
--- a/Source/web/WebViewImpl.cpp
+++ b/Source/web/WebViewImpl.cpp
@@ -867,7 +867,10 @@ void WebViewImpl::getSelectionRootBounds(WebRect& bounds) const
                 && toHTMLInputElement(*shadowHost).isText())))
         root = shadowHost;
 
-    IntRect boundingBox = root->pixelSnappedBoundingBox();
+    IntRect boundingBox = isHTMLHtmlElement(root)
+        ? IntRect(IntPoint(0, 0), root->document().frame()->view()->contentsSize())
+        : root->pixelSnappedBoundingBox();
+
     boundingBox = root->document().frame()->view()->contentsToWindow(boundingBox);
     boundingBox.scale(pageScaleFactor());
     bounds = boundingBox;
@@ -2192,6 +2195,7 @@ bool WebViewImpl::selectionBounds(WebRect& anchor, WebRect& focus) const
 
     if (!selection.selection().isBaseFirst())
         std::swap(anchor, focus);
+

[jochen (gone - plz use gerrit), 2014/04/14 07:12:16]

unrelated change?

[mlamouri (slow - plz ping), 2014/04/14 07:25:54]

Removed.

     return true;
 }