Printing: Disable subframes when printing a selection.

chrome/browser/printing/print_browsertest.cc

+// Copyright 2017 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 "base/auto_reset.h"
+#include "chrome/browser/printing/print_view_manager_common.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "chrome/browser/ui/webui/print_preview/print_preview_ui.h"
+#include "chrome/common/pref_names.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "chrome/test/base/ui_test_utils.h"
+#include "components/prefs/pref_service.h"
+#include "net/test/embedded_test_server/embedded_test_server.h"
+
+namespace printing {
+
+namespace {
+
+class PrintPreviewObserver : PrintPreviewUI::TestingDelegate {
+ public:
+  PrintPreviewObserver() { PrintPreviewUI::SetDelegateForTesting(this); }
+  ~PrintPreviewObserver() { PrintPreviewUI::SetDelegateForTesting(nullptr); }
+
+  void WaitUntilPreviewIsReady() {
+    if (rendered_page_count_ >= total_page_count_)
+      return;
+
+    base::RunLoop run_loop;
+    base::AutoReset<base::RunLoop*> auto_reset(&run_loop_, &run_loop);
+    run_loop.Run();
+  }
+
+ private:
+  // PrintPreviewUI::TestingDelegate implementation.
+  void DidGetPreviewPageCount(int page_count) override {
+    total_page_count_ = page_count;
+  }
+
+  // PrintPreviewUI::TestingDelegate implementation.
+  void DidRenderPreviewPage(content::WebContents* preview_dialog) override {
+    ++rendered_page_count_;
+    CHECK(rendered_page_count_ <= total_page_count_);
+    if (rendered_page_count_ == total_page_count_ && run_loop_) {
+      run_loop_->Quit();
+    }
+  }
+
+  int total_page_count_ = 1;
+  int rendered_page_count_ = 0;
+  base::RunLoop* run_loop_ = nullptr;
+};
+
+}  // namespace
+
+class PrintBrowserTest : public InProcessBrowserTest {
+ public:
+  PrintBrowserTest() {}
+  ~PrintBrowserTest() override {}
+
+  void PrintAndWaitUntilPreviewIsReady(bool print_only_selection) {
+    PrintPreviewObserver print_preview_observer;
+
+    printing::StartPrint(browser()->tab_strip_model()->GetActiveWebContents(),
+                         /*print_preview_disabled=*/false,
+                         print_only_selection);
+
+    print_preview_observer.WaitUntilPreviewIsReady();
+  }
+};
+
+// Printing only a selection containing iframes is partially supported.
+// Iframes aren't currently displayed. This test passes whenever the print
+// preview is rendered (i.e. no timeout in the test).
+// This test shouldn't crash. See https://crbug.com/732780.
+IN_PROC_BROWSER_TEST_F(PrintBrowserTest, SelectionContainsIframe) {
+  ASSERT_TRUE(embedded_test_server()->Start());
+  GURL url(embedded_test_server()->GetURL("/printing/selection_iframe.html"));
+  ui_test_utils::NavigateToURL(browser(), url);
+
+  PrintAndWaitUntilPreviewIsReady(/*print_only_selection=*/true);
+}
+
+}  // namespace printing