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

chrome/browser/chromeos/frame/browser_view.cc

Index: chrome/browser/chromeos/frame/browser_view.cc
===================================================================
--- chrome/browser/chromeos/frame/browser_view.cc	(revision 74231)
+++ chrome/browser/chromeos/frame/browser_view.cc	(working copy)
@@ -89,7 +89,7 @@
     gfx::Rect tabstrip_bounds(
         browser_view_->frame()->GetBoundsForTabStrip(tabstrip_));
     gfx::Point tabstrip_origin = tabstrip_bounds.origin();
-    views::View::ConvertPointToView(browser_view_->GetParent(), browser_view_,
+    views::View::ConvertPointToView(browser_view_->parent(), browser_view_,
                                     &tabstrip_origin);
     tabstrip_bounds.set_origin(tabstrip_origin);
     return browser_view_->UseVerticalTabs() ?
@@ -115,7 +115,7 @@
   virtual int NonClientHitTest(const gfx::Point& point) {
     gfx::Point point_in_browser_view_coords(point);
     views::View::ConvertPointToView(
-        browser_view_->GetParent(), browser_view_,
+        browser_view_->parent(), browser_view_,
         &point_in_browser_view_coords);
     return IsPointInViewsInTitleArea(point_in_browser_view_coords) ?
         HTCLIENT : ::BrowserViewLayout::NonClientHitTest(point);
@@ -313,7 +313,7 @@
   // - HTCAPTION: in title bar or unobscured part of tabstrip
   // - HTNOWHERE: as the name implies.
   gfx::Point point_in_parent_coords(p);
-  views::View::ConvertPointToView(NULL, GetParent(), &point_in_parent_coords);
+  views::View::ConvertPointToView(NULL, parent(), &point_in_parent_coords);
   int hit_test = NonClientHitTest(point_in_parent_coords);
   if (hit_test == HTCAPTION || hit_test == HTNOWHERE)
     system_menu_menu_->RunMenuAt(p, views::Menu2::ALIGN_TOPLEFT);