Add setBounds method and browsertest for get/set bounds to app window API

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

Index: chrome/browser/ui/views/extensions/shell_window_views.cc
diff --git a/chrome/browser/ui/views/extensions/shell_window_views.cc b/chrome/browser/ui/views/extensions/shell_window_views.cc
index 13a9b15b4f6388862495ebde39663abe4f9087d5..04e86d2cf266ed4306022678f5e88b1f7feb08ef 100644
--- a/chrome/browser/ui/views/extensions/shell_window_views.cc
+++ b/chrome/browser/ui/views/extensions/shell_window_views.cc
@@ -684,6 +684,10 @@ bool ShellWindowViews::ShouldShowWindowTitle() const {
   return false;
 }
 
+void  ShellWindowViews::OnWidgetMove() {
+  shell_window_->SendBoundsUpdate();
+}
+
 void ShellWindowViews::Layout() {
   DCHECK(web_view_);
   web_view_->SetBounds(0, 0, width(), height());