[WIN]Save work area of window and adjust bounds to ensure it fit on screen before show.

chrome/browser/ui/views/extensions/native_app_window_views.cc

Index: chrome/browser/ui/views/extensions/native_app_window_views.cc
diff --git a/chrome/browser/ui/views/extensions/native_app_window_views.cc b/chrome/browser/ui/views/extensions/native_app_window_views.cc
index a030010237ab9f69cde219a1caebcfc252f880f8..d74646fda5b651506841c7dd758642054d9d776e 100644
--- a/chrome/browser/ui/views/extensions/native_app_window_views.cc
+++ b/chrome/browser/ui/views/extensions/native_app_window_views.cc
@@ -22,6 +22,7 @@
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_view.h"
 #include "extensions/common/draggable_region.h"
+#include "ui/gfx/screen.h"
 #include "ui/views/controls/webview/webview.h"
 #include "ui/views/widget/widget.h"
 #include "ui/views/window/non_client_view.h"
@@ -406,6 +407,11 @@ gfx::Insets NativeAppWindowViews::GetFrameInsets() const {
   return window_bounds.InsetsFrom(client_bounds);
 }
 
+gfx::Rect NativeAppWindowViews::GetWindowWorkArea() const {
+  return gfx::Screen::GetScreenFor(window_->GetNativeView())->
+      GetDisplayMatching(GetBounds()).work_area();
+}
+
 gfx::NativeView NativeAppWindowViews::GetHostView() const {
   return window_->GetNativeView();
 }