Fix the full screen switching browser window dipping below launcher bar issue.

ash/wm/workspace/workspace_manager.h

Index: ash/wm/workspace/workspace_manager.h
diff --git a/ash/wm/workspace/workspace_manager.h b/ash/wm/workspace/workspace_manager.h
index 8adf5b9658fa501bdb5515455c4d56d7da313094..cd7da4a761a06184c38417c50e5ac7cb6e942b4d 100644
--- a/ash/wm/workspace/workspace_manager.h
+++ b/ash/wm/workspace/workspace_manager.h
@@ -71,6 +71,9 @@ class ASH_EXPORT WorkspaceManager : public aura::WindowObserver{
   // Sets the size of a single workspace (all workspaces have the same size).
   void SetWorkspaceSize(const gfx::Size& workspace_size);
 
+  // Sets the bounds of all workspaces.
+  void SetWorkspaceBounds();
+
   // Returns the window the layout manager should allow the size to be set for.
   // TODO: maybe this should be set on WorkspaceLayoutManager.
   aura::Window* ignored_window() { return ignored_window_; }