Expose the selection root bounds in WebView.

public/web/WebWidget.h

Index: public/web/WebWidget.h
diff --git a/public/web/WebWidget.h b/public/web/WebWidget.h
index 10ad2912191bb0750c0e60ee673b856d11d07c1b..3337b5a6e3b3141fd3e0067b16e960174b807649 100644
--- a/public/web/WebWidget.h
+++ b/public/web/WebWidget.h
@@ -194,6 +194,12 @@ public:
     // If the selection range is empty, it returns the caret bounds.
     virtual bool selectionBounds(WebRect& anchor, WebRect& focus) const { return false; }
 
+    // Compute the bounds of the root element of the current selection and fills
+    // the out-parameter on success. |bounds| coordinates will be relative to the
+    // contents window and will take into account the current scale level.
+    // Returns false if there is no selection.
+    virtual bool selectionRootBounds(WebRect& bounds) const { return false; }

[jamesr, 2014/03/06 21:55:07]

why add this to WebWidget if you are only implementing it in WebViewImpl?  If
this is not relevant for other WebWidget implementations, then put it on WebView
(or possibly WebFrame or whatever makes sense).

[mlamouri (slow - plz ping), 2014/03/07 13:50:29]

This is being used in RenderWidget and it is interacting with a WebWidget, not a
WebView. I followed the same design as WebWidget::selectionBounds(), which is
declared in WebWidget but only implemented in WebView.

+
     // Called to notify that IME candidate window has changed its visibility or
     // its appearance. These calls correspond to trigger
     // candidatewindow{show,update,hide} events defined in W3C IME API.