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

chrome/browser/extensions/api/app_window/app_window_api.cc

Index: chrome/browser/extensions/api/app_window/app_window_api.cc
diff --git a/chrome/browser/extensions/api/app_window/app_window_api.cc b/chrome/browser/extensions/api/app_window/app_window_api.cc
index 6ac4b8179e72ffc29339a7fbb68133115e9c531b..e10cee835a3f432c17cb868992d77dad91888631 100644
--- a/chrome/browser/extensions/api/app_window/app_window_api.cc
+++ b/chrome/browser/extensions/api/app_window/app_window_api.cc
@@ -209,6 +209,13 @@ bool AppWindowCreateFunction::RunImpl() {
   result->Set("injectTitlebar",
       base::Value::CreateBooleanValue(inject_html_titlebar));
   result->Set("id", base::Value::CreateStringValue(shell_window->window_key()));
+  DictionaryValue* boundsValue = new DictionaryValue();
+  gfx::Rect bounds = shell_window->GetBaseWindow()->GetBounds();
+  boundsValue->SetInteger("left", bounds.x());
+  boundsValue->SetInteger("top", bounds.y());
+  boundsValue->SetInteger("width", bounds.width());
+  boundsValue->SetInteger("height", bounds.height());
+  result->Set("bounds", boundsValue);
   SetResult(result);
 
   if (ShellWindowRegistry::Get(profile())->HadDevToolsAttached(created_view)) {