Created min size for print preview dialog and modified to allow the

chrome/browser/printing/print_preview_test.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/printing/print_preview_test.h"
 
+#include "chrome/browser/printing/print_preview_dialog_controller.h"
 #include "chrome/test/base/dialog_test_browser_window.h"
 #include "content/public/browser/plugin_service.h"
+#include "ui/views/window/dialog_delegate.h"
 
 PrintPreviewTest::PrintPreviewTest() {}
 PrintPreviewTest::~PrintPreviewTest() {}
 
 void PrintPreviewTest::SetUp() {
   BrowserWithTestWindowTest::SetUp();
 
   // The PluginService will be destroyed at the end of the test (due to the
   // ShadowingAtExitManager in our base class).
   content::PluginService::GetInstance()->Init();
 }
 
 BrowserWindow* PrintPreviewTest::CreateBrowserWindow() {
   return new DialogTestBrowserWindow;
 }
+
+#if defined(USE_AURA)
+PrintPreviewDialogControllerTest::PrintPreviewDialogControllerTest(
+    gfx::NativeView context): context_(context) {}
+
+PrintPreviewDialogControllerTest::~PrintPreviewDialogControllerTest() {}
+
+// Need to override the function to get the delegate so that it uses the
+// correct window.
+ConstrainedWebDialogDelegate* PrintPreviewDialogControllerTest::
+    GetWebDialogDelegate(
+    content::WebContents* initiator) {
+  ConstrainedWebDialogDelegate* dialog =
+    ShowTopLevelConstrainedWebDialogInWindow(
+         initiator->GetBrowserContext(),
+         printing::GetPrintPreviewDialogDelegate(initiator),
+         initiator, context_);
+  return dialog;
+}
+
+void PrintPreviewDialogControllerTest::SetContext(gfx::NativeView context) {
+  context_ = context;
+}
+#endif