Make Paste Popup use selection rect for positioning

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 2e952fd5a26a3ca6dfcdb4ca3cb40252a7a6939b..7e6c1fdabddf40758cc0499df6a8322ca971b0f6 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -4316,14 +4316,9 @@ void RenderFrameImpl::ShowContextMenu(const blink::WebContextMenuData& data) {
   if (params.src_url.spec().size() > url::kMaxURLChars)
     params.src_url = GURL();
 
-#if defined(OS_ANDROID)
-  gfx::Rect start_rect;
-  gfx::Rect end_rect;
-  GetRenderWidget()->GetSelectionBounds(&start_rect, &end_rect);
-  params.selection_start = gfx::Point(start_rect.x(), start_rect.bottom());
-  params.selection_end = gfx::Point(end_rect.right(), end_rect.bottom());
-#endif
-
+  blink::WebRect selection_in_window(data.selection_rect);
+  GetRenderWidget()->ConvertViewportToWindow(&selection_in_window);
+  params.selection_rect = selection_in_window;
   Send(new FrameHostMsg_ContextMenu(routing_id_, params));
 }