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

ash/wm/workspace/workspace_manager.cc

Index: ash/wm/workspace/workspace_manager.cc
diff --git a/ash/wm/workspace/workspace_manager.cc b/ash/wm/workspace/workspace_manager.cc
index 098c4e91a52de89c20abc818d9360a171af33f14..5eace102f8520aad8127ac76a724f18cb7a31987 100644
--- a/ash/wm/workspace/workspace_manager.cc
+++ b/ash/wm/workspace/workspace_manager.cc
@@ -187,6 +187,10 @@ void WorkspaceManager::SetWorkspaceSize(const gfx::Size& workspace_size) {
   if (workspace_size == workspace_size_)
     return;
   workspace_size_ = workspace_size;
+  SetWorkspaceBounds();
+}
+
+void WorkspaceManager::SetWorkspaceBounds() {
   for (Workspaces::const_iterator i = workspaces_.begin();
        i != workspaces_.end(); ++i) {
     (*i)->SetBounds(GetWorkAreaBounds());