Remove docked windows entirely in M59.

ash/common/shelf/shelf_layout_manager.h

Index: ash/common/shelf/shelf_layout_manager.h
diff --git a/ash/common/shelf/shelf_layout_manager.h b/ash/common/shelf/shelf_layout_manager.h
index 652549557befd6f8bd399daf1fc875489f0c9ecf..23e6a91eb3f3ad81918a6226612659f4c8a7da32 100644
--- a/ash/common/shelf/shelf_layout_manager.h
+++ b/ash/common/shelf/shelf_layout_manager.h
@@ -11,7 +11,6 @@
 #include "ash/common/session/session_state_observer.h"
 #include "ash/common/shelf/wm_shelf.h"
 #include "ash/common/shell_observer.h"
-#include "ash/common/wm/dock/docked_window_layout_manager_observer.h"
 #include "ash/common/wm/lock_state_observer.h"
 #include "ash/common/wm/wm_snap_to_pixel_layout_manager.h"
 #include "ash/common/wm/workspace/workspace_types.h"
@@ -53,7 +52,6 @@ class WmShelf;
 class ASH_EXPORT ShelfLayoutManager
     : public ShellObserver,
       public aura::client::ActivationChangeObserver,
-      public DockedWindowLayoutManagerObserver,
       public keyboard::KeyboardControllerObserver,
       public LockStateObserver,
       public wm::WmSnapToPixelLayoutManager,
@@ -77,9 +75,6 @@ class ASH_EXPORT ShelfLayoutManager
   // Returns the preferred size of the shelf for the target visibility state.
   gfx::Size GetPreferredSize();
 
-  // Returns the docked area bounds.
-  const gfx::Rect& dock_bounds() const { return dock_bounds_; }
-
   // Returns the bounds within the root window not occupied by the shelf nor the
   // virtual keyboard.
   const gfx::Rect& user_work_area_bounds() const {
@@ -275,11 +270,6 @@ class ASH_EXPORT ShelfLayoutManager
 
   int GetWorkAreaInsets(const State& state, int size) const;
 
-  // Overridden from DockedWindowLayoutManagerObserver:
-  void OnDockBoundsChanging(
-      const gfx::Rect& dock_bounds,
-      DockedWindowLayoutManagerObserver::Reason reason) override;
-
   // Called when the LoginUI changes from visible to invisible.
   void UpdateShelfVisibilityAfterLoginUIChange();
 
@@ -347,9 +337,6 @@ class ASH_EXPORT ShelfLayoutManager
   // The bounds of the keyboard.
   gfx::Rect keyboard_bounds_;
 
-  // The bounds of the dock.
-  gfx::Rect dock_bounds_;
-
   // The bounds within the root window not occupied by the shelf nor the virtual
   // keyboard.
   gfx::Rect user_work_area_bounds_;