[Android] Allow custom ActionMode creation via ContentViewClient

content/browser/renderer_host/render_widget_host_view_android.cc

Index: content/browser/renderer_host/render_widget_host_view_android.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_android.cc b/content/browser/renderer_host/render_widget_host_view_android.cc
index 159b69fa4fe935bf3fa8212ffd3c3be1c971ed2e..05519c16d1e7954bb8545d3a6cac7b273ceaa6ce 100644
--- a/content/browser/renderer_host/render_widget_host_view_android.cc
+++ b/content/browser/renderer_host/render_widget_host_view_android.cc
@@ -1342,16 +1342,18 @@ void RenderWidgetHostViewAndroid::SelectBetweenCoordinates(
 }
 
 void RenderWidgetHostViewAndroid::OnSelectionEvent(
-    ui::SelectionEventType event,
-    const gfx::PointF& position) {
+    ui::SelectionEventType event) {
   DCHECK(content_view_core_);
+  DCHECK(selection_controller_);
   // Showing the selection action bar can alter the current View coordinates in
   // such a way that the current MotionEvent stream is suddenly shifted in
   // space. Avoid the associated scroll jump by pre-emptively cancelling gesture
   // detection; scrolling after the selection is activated is unnecessary.
   if (event == ui::SelectionEventType::SELECTION_SHOWN)
     ResetGestureDetection();
-  content_view_core_->OnSelectionEvent(event, position);
+  content_view_core_->OnSelectionEvent(
+      event, selection_controller_->GetStartPosition(),
+      selection_controller_->GetRectBetweenBoundsIncludingHandles());
 }
 
 scoped_ptr<ui::TouchHandleDrawable>