Hide panels in presence of full screen app for windows.

chrome/browser/ui/panels/panel_browser_view.cc

Index: chrome/browser/ui/panels/panel_browser_view.cc
diff --git a/chrome/browser/ui/panels/panel_browser_view.cc b/chrome/browser/ui/panels/panel_browser_view.cc
index 7e676c49ecb5bd3c736adfe88dfaeb0ab038cea1..04872f4bff4484cef092b6874b608dc707387adb 100644
--- a/chrome/browser/ui/panels/panel_browser_view.cc
+++ b/chrome/browser/ui/panels/panel_browser_view.cc
@@ -100,6 +100,16 @@ void PanelBrowserView::Init() {
       l10n_util::GetStringUTF16(IDS_PRODUCT_NAME));
 }
 
+void PanelBrowserView::Show() {
+  if (!panel_->manager()->is_full_screen())
+    BrowserView::Show();
+}
+
+void PanelBrowserView::ShowInactive() {
+  if (!panel_->manager()->is_full_screen())
+    BrowserView::ShowInactive();
+}
+
 void PanelBrowserView::Close() {
   GetWidget()->RemoveObserver(this);
   closed_ = true;
@@ -413,11 +423,13 @@ bool PanelBrowserView::PreHandlePanelKeyboardEvent(
 }
 
 void PanelBrowserView::FullScreenModeChanged(bool is_full_screen) {
-  // TODO(prasadt): Enable this code.
-  // if (is_full_screen)
-  //   HideThePanel.
-  // else
-  //   ShowThePanel.
+  if (is_full_screen) {
+    if (frame()->IsVisible()) {
+        frame()->Hide();
+    }
+  } else {
+    ShowInactive();
+  }
 }
 
 void PanelBrowserView::HandlePanelKeyboardEvent(