Remove obsolete plugin state handling code.

chrome/browser/printing/print_preview_dialog_controller_browsertest.cc

Index: chrome/browser/printing/print_preview_dialog_controller_browsertest.cc
diff --git a/chrome/browser/printing/print_preview_dialog_controller_browsertest.cc b/chrome/browser/printing/print_preview_dialog_controller_browsertest.cc
index 598a121a912ac3ce0591566a8938ef2e9e84cc6a..c481d12066a6a251e6f348d7e299ceb354ff2b90 100644
--- a/chrome/browser/printing/print_preview_dialog_controller_browsertest.cc
+++ b/chrome/browser/printing/print_preview_dialog_controller_browsertest.cc
@@ -180,6 +180,11 @@ class PrintPreviewDialogControllerBrowserTest : public InProcessBrowserTest {
     return dialog_controller->GetPrintPreviewForContents(initiator_);
   }
 
+  void SetAlwaysOpenPdfExternallyForTests(bool always_open_pdf_externally) {
+    PluginPrefs::GetForProfile(browser()->profile())
+        ->SetAlwaysOpenPdfExternallyForTests(always_open_pdf_externally);
+  }
+
  private:
   void SetUpOnMainThread() override {
     WebContents* first_tab =
@@ -292,14 +297,7 @@ IN_PROC_BROWSER_TEST_F(PrintPreviewDialogControllerBrowserTest,
   ASSERT_TRUE(GetPdfPluginInfo(&pdf_plugin_info));
 
   // Disable the PDF plugin.
-  {
-    base::RunLoop run_loop;
-    PluginPrefs::GetForProfile(browser()->profile())->EnablePlugin(
-        false,
-        base::FilePath::FromUTF8Unsafe(ChromeContentClient::kPDFPluginPath),
-        base::Bind(&PluginEnabledCallback, run_loop.QuitClosure()));
-    run_loop.Run();
-  }
+  SetAlwaysOpenPdfExternallyForTests(true);
 
   // Make sure it is actually disabled for webpages.
   ChromePluginServiceFilter* filter = ChromePluginServiceFilter::GetInstance();