Remove some implicit Point to PointF conversions, add helpers.

ui/views/touchui/touch_selection_controller_impl.cc

Index: ui/views/touchui/touch_selection_controller_impl.cc
diff --git a/ui/views/touchui/touch_selection_controller_impl.cc b/ui/views/touchui/touch_selection_controller_impl.cc
index 55af1bc90ec371dac7624a8b5dac3d3782bc8067..d273ee3fa1913b6b5db4b4623447716d017e4fe1 100644
--- a/ui/views/touchui/touch_selection_controller_impl.cc
+++ b/ui/views/touchui/touch_selection_controller_impl.cc
@@ -182,7 +182,7 @@ ui::SelectionBound ConvertFromScreen(ui::TouchEditable* client,
   gfx::Point edge_top = bound.edge_top_rounded();
   client->ConvertPointFromScreen(&edge_bottom);
   client->ConvertPointFromScreen(&edge_top);
-  result.SetEdge(edge_top, edge_bottom);
+  result.SetEdge(gfx::PointF(edge_top), gfx::PointF(edge_bottom));
   return result;
 }
 
@@ -193,7 +193,7 @@ ui::SelectionBound ConvertToScreen(ui::TouchEditable* client,
   gfx::Point edge_top = bound.edge_top_rounded();
   client->ConvertPointToScreen(&edge_bottom);
   client->ConvertPointToScreen(&edge_top);
-  result.SetEdge(edge_top, edge_bottom);
+  result.SetEdge(gfx::PointF(edge_top), gfx::PointF(edge_bottom));
   return result;
 }
 
@@ -364,7 +364,7 @@ class TouchSelectionControllerImpl::EditingHandleView
     gfx::Point edge_bottom = selection_bound_.edge_bottom_rounded();
     wm::ConvertPointFromScreen(window, &edge_top);
     wm::ConvertPointFromScreen(window, &edge_bottom);
-    selection_bound_.SetEdge(edge_top, edge_bottom);
+    selection_bound_.SetEdge(gfx::PointF(edge_top), gfx::PointF(edge_bottom));
   }
 
   void SetDrawInvisible(bool draw_invisible) {
@@ -457,12 +457,12 @@ void TouchSelectionControllerImpl::SelectionChanged() {
   ui::SelectionBound screen_bound_focus = ConvertToScreen(client_view_, focus);
   gfx::Rect client_bounds = client_view_->GetBounds();
   if (anchor.edge_top().y() < client_bounds.y()) {
-    gfx::Point anchor_edge_top = anchor.edge_top_rounded();
+    auto anchor_edge_top = gfx::PointF(anchor.edge_top_rounded());
     anchor_edge_top.set_y(client_bounds.y());
     anchor.SetEdgeTop(anchor_edge_top);
   }
   if (focus.edge_top().y() < client_bounds.y()) {
-    gfx::Point focus_edge_top = focus.edge_top_rounded();
+    auto focus_edge_top = gfx::PointF(focus.edge_top_rounded());
     focus_edge_top.set_y(client_bounds.y());
     focus.SetEdgeTop(focus_edge_top);
   }