Rework tree APIs to reflect Google style and more const-correctness....

chrome/browser/ui/views/autocomplete/autocomplete_popup_contents_view.cc

Index: chrome/browser/ui/views/autocomplete/autocomplete_popup_contents_view.cc
===================================================================
--- chrome/browser/ui/views/autocomplete/autocomplete_popup_contents_view.cc	(revision 74117)
+++ chrome/browser/ui/views/autocomplete/autocomplete_popup_contents_view.cc	(working copy)
@@ -837,7 +837,7 @@
   // Update the match cached by each row, in the process of doing so make sure
   // we have enough row views.
   int total_child_height = 0;
-  size_t child_rv_count = GetChildViewCount();
+  size_t child_rv_count = child_count();
   if (opt_in_view_) {
     DCHECK(child_rv_count > 0);
     child_rv_count--;
@@ -847,7 +847,7 @@
     if (i >= child_rv_count) {
       result_view =
           new AutocompleteResultView(this, i, result_font_, result_bold_font_);
-      AddChildView(static_cast<int>(i), result_view);
+      AddChildViewAt(result_view, i);
     } else {
       result_view = static_cast<AutocompleteResultView*>(GetChildViewAt(i));
       result_view->SetVisible(true);
@@ -991,9 +991,8 @@
 
   // Size our children to the available content area.
   gfx::Rect contents_rect = GetLocalBounds();
-  int child_count = GetChildViewCount();
   int top = contents_rect.y();
-  for (int i = 0; i < child_count; ++i) {
+  for (size_t i = 0; i < child_count(); ++i) {
     View* v = GetChildViewAt(i);
     if (v->IsVisible()) {
       v->SetBounds(contents_rect.x(), top, contents_rect.width(),
@@ -1071,7 +1070,7 @@
   views::View* child = views::View::GetViewForPoint(point);
   views::View* ancestor = child;
   while (ancestor && ancestor != opt_in_view_)
-    ancestor = ancestor->GetParent();
+    ancestor = ancestor->parent();
   return ancestor ? child : this;
 }
 
@@ -1161,9 +1160,9 @@
   if (!HitTest(point))
     return AutocompletePopupModel::kNoMatch;
 
-  int nb_match = model_->result().size();
-  DCHECK(nb_match <= GetChildViewCount());
-  for (int i = 0; i < nb_match; ++i) {
+  size_t nb_match = model_->result().size();
+  DCHECK(nb_match <= child_count());
+  for (size_t i = 0; i < nb_match; ++i) {
     views::View* child = GetChildViewAt(i);
     gfx::Point point_in_child_coords(point);
     View::ConvertPointToView(this, child, &point_in_child_coords);