Partial fix for keyboard occlusion.

ash/wm/panels/panel_layout_manager.h

Index: ash/wm/panels/panel_layout_manager.h
diff --git a/ash/wm/panels/panel_layout_manager.h b/ash/wm/panels/panel_layout_manager.h
index 3d4371dbbe8878e03d9356b9782154b093b91dfc..057de2767438f549e1738ac2ea490ee57b718311 100644
--- a/ash/wm/panels/panel_layout_manager.h
+++ b/ash/wm/panels/panel_layout_manager.h
@@ -18,6 +18,7 @@
 #include "ui/aura/client/activation_change_observer.h"
 #include "ui/aura/layout_manager.h"
 #include "ui/aura/window_observer.h"
+#include "ui/keyboard/keyboard_controller.h"
 
 namespace aura {
 class Window;
@@ -52,6 +53,7 @@ class ASH_EXPORT PanelLayoutManager
       public ash::ShellObserver,
       public aura::WindowObserver,
       public aura::client::ActivationChangeObserver,
+      public keyboard::KeyboardController::Observer,
       public ShelfLayoutManager::Observer {
  public:
   explicit PanelLayoutManager(aura::Window* panel_container);
@@ -140,6 +142,10 @@ class ASH_EXPORT PanelLayoutManager
   // Update the callout arrows for all managed panels.
   void UpdateCallouts();
 
+  // Overridden from keyboard::KeyboardController::Observer:
+  virtual void OnKeyboardBoundsChanging(
+      const gfx::Rect& keyboard_bounds) OVERRIDE;
+
   // Parent window associated with this layout manager.
   aura::Window* panel_container_;
   // Protect against recursive calls to Relayout().