Added options browser_tests using the generator and js handler framework.

chrome/browser/ui/webui/print_preview_browsertest.cc

Index: chrome/browser/ui/webui/print_preview_browsertest.cc
diff --git a/chrome/browser/ui/webui/print_preview_browsertest.cc b/chrome/browser/ui/webui/print_preview_browsertest.cc
index a288956d73420fdc398cff154fed60b3d24ab220..73c3e9bb33a47d008834fc3d453da5a56cbf4b7f 100644
--- a/chrome/browser/ui/webui/print_preview_browsertest.cc
+++ b/chrome/browser/ui/webui/print_preview_browsertest.cc
@@ -34,8 +34,7 @@ void PrintAndWaitForPrintPreviewTab(
 }  // namespace
 
 class PrintPreviewWebUITest
-    : public WebUIBrowserTest,
-      public TestTabStripModelObserver::LoadStartObserver {
+    : public WebUIBrowserTest {
  protected:
   // WebUIBrowserTest:
   virtual void SetUpOnMainThread() OVERRIDE {
@@ -43,6 +42,7 @@ class PrintPreviewWebUITest
     if (!HasPDFLib())
       skipTest(base::StringPrintf("%s:%d: No PDF Lib.", __FILE__, __LINE__));
 
+    override_chrome_send_ = true;
     AddLibrary(FilePath(FILE_PATH_LITERAL("print_preview.js")));
     GURL print_preview_test_url = WebUITestDataPathToURL(
         FILE_PATH_LITERAL("print_preview_hello_world_test.html"));
@@ -60,11 +60,6 @@ class PrintPreviewWebUITest
 #endif
   }
 
-  // TestTabStripModelObserver::LoadStartObserver:
-  virtual void OnLoadStart() OVERRIDE {
-    PreLoadJavascriptLibraries(true);
-  }
-
   bool HasPDFLib() const {
     FilePath pdf;
     return PathService::Get(chrome::FILE_PDF_PLUGIN, &pdf) &&