MacViews: Implement text input.

ui/views/cocoa/bridged_native_widget.h

Index: ui/views/cocoa/bridged_native_widget.h
diff --git a/ui/views/cocoa/bridged_native_widget.h b/ui/views/cocoa/bridged_native_widget.h
index 59754d1d1290cced4083316f67ecfc94dc46ed86..a4e4de50cc19294ce40d59ce7d9ae82cdfcdaf56 100644
--- a/ui/views/cocoa/bridged_native_widget.h
+++ b/ui/views/cocoa/bridged_native_widget.h
@@ -9,6 +9,7 @@
 
 #import "base/mac/scoped_nsobject.h"
 #include "base/memory/scoped_ptr.h"
+#import "ui/views/focus/focus_manager.h"
 #include "ui/views/ime/input_method_delegate.h"
 #include "ui/views/views_export.h"
 
@@ -26,8 +27,8 @@ class View;
 // A bridge to an NSWindow managed by an instance of NativeWidgetMac or
 // DesktopNativeWidgetMac. Serves as a helper class to bridge requests from the
 // NativeWidgetMac to the Cocoa window. Behaves a bit like an aura::Window.
-class VIEWS_EXPORT BridgedNativeWidget : public internal::InputMethodDelegate {
-
+class VIEWS_EXPORT BridgedNativeWidget : public internal::InputMethodDelegate,
+                                         public FocusChangeListener {
  public:
   BridgedNativeWidget();
   virtual ~BridgedNativeWidget();
@@ -54,6 +55,12 @@ class VIEWS_EXPORT BridgedNativeWidget : public internal::InputMethodDelegate {
   base::scoped_nsobject<BridgedContentView> bridged_view_;
   scoped_ptr<ui::InputMethod> input_method_;
 
+  // Overridden from FocusChangeListener:
+  virtual void OnWillChangeFocus(View* focused_before,
+                                 View* focused_now) OVERRIDE;
+  virtual void OnDidChangeFocus(View* focused_before,
+                                View* focused_now) OVERRIDE;
+
   DISALLOW_COPY_AND_ASSIGN(BridgedNativeWidget);
 };