UI Language switch implemented by propagating LocaleChanged()

notification to all the views currently active. 
Before this CL, all views were recreated instead. That was very refactoring-unsafe.

Note, this is first part of the change. It prepares overall architecture means and can be committed first.
The other part contains implementation details and is here: http://codereview.chromium.org/1551029/show

BUG=none
TEST=none

Review URL: http://codereview.chromium.org/1596023

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@45057 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 6 insertions, 4 deletions

diff --git a/views/view.h b/views/view.h
index d8177aa..bdf1b23 100644
--- a/views/view.h
+++ b/views/view.h
@@ -982,10 +982,8 @@ class View : public AcceleratorTarget {
   virtual void ThemeChanged();
 
   // Called when the locale has changed, overriding allows individual Views to
-  // update locale-dependent resources (strings, bitmaps) it may have cached
-  // internally. Subclasses that override this method must call the base class
-  // implementation to ensure child views are processed.
-  virtual void LocaleChanged();
+  // update locale-dependent strings.
+  virtual void LocaleChanged() { }
 
 #ifndef NDEBUG
   // Returns true if the View is currently processing a paint.
@@ -1125,6 +1123,10 @@ class View : public AcceleratorTarget {
     gfx::Point start_pt;
   };
 
+  // Propagates locale changed notification from the root view downside.
+  // Invokes LocaleChanged() for every view in the hierarchy.
+  virtual void NotifyLocaleChanged();
+
   // RootView invokes these. These in turn invoke the appropriate OnMouseXXX
   // method. If a drag is detected, DoDrag is invoked.
   bool ProcessMousePressed(const MouseEvent& e, DragInfo* drop_info);