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

ui/aura/root_window.cc

Index: ui/aura/root_window.cc
diff --git a/ui/aura/root_window.cc b/ui/aura/root_window.cc
index aaec097a2fb4b4fe7d832b936de9a0e986aeea4b..449ec0903515c44c10b00011a16d4f7358f8ece8 100644
--- a/ui/aura/root_window.cc
+++ b/ui/aura/root_window.cc
@@ -115,6 +115,12 @@ gfx::Size RootWindow::GetHostSize() const {
   return rect.size();
 }
 
+void RootWindow::SetScreenWorkAreaInsets(const gfx::Insets& insets) {
+  screen_->set_work_area_insets(insets);

[sky, 2012/03/01 01:43:19]

Don't do anything if insets are the same.

[jennyz, 2012/03/01 18:27:45]

Done.

+  FOR_EACH_OBSERVER(RootWindowObserver, observers_,
+                    OnScreenWorkAreaInsetsChanged());
+}
+
 void RootWindow::SetCursor(gfx::NativeCursor cursor) {
   last_cursor_ = cursor;
   // A lot of code seems to depend on NULL cursors actually showing an arrow,