Catch CSP violations in InProcessBrowserTest

chrome/browser/dom_distiller/dom_distiller_viewer_source_browsertest.cc

 // Copyright 2014 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 <string.h>
 
 #include <memory>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 259 matching lines @@
 // are enabled when the CSS resource is loaded. This CSS might be bundle with
 // Chrome or provided by an extension.
 IN_PROC_BROWSER_TEST_F(DomDistillerViewerSourceBrowserTest,
                        NoWebUIBindingsDisplayCSS) {
   expect_distillation_ = false;
   expect_distiller_page_ = false;
   // Navigate to a URL which the source should respond to with CSS.
   std::string url_without_scheme = std::string("://foobar/") + kViewerCssPath;
   GURL url(kDomDistillerScheme + url_without_scheme);
   ViewSingleDistilledPage(url, "text/css");
+  SetExpectCSPErrorMessages(true);
 }
 
 
 #if defined(OS_LINUX)
 // Flaky on Ubuntu-12.04 bots: https://crbug.com/604362
 #define MAYBE_EmptyURLShouldNotCrash DISABLED_EmptyURLShouldNotCrash
 #else
 #define MAYBE_EmptyURLShouldNotCrash EmptyURLShouldNotCrash
 #endif
 IN_PROC_BROWSER_TEST_F(DomDistillerViewerSourceBrowserTest,
@@ skipping 356 matching lines @@
   EXPECT_EQ("dark serif", result);
   EXPECT_EQ(kDarkToolbarThemeColor, contents->GetThemeColor());
 
   EXPECT_TRUE(content::ExecuteScriptAndExtractString(
       contents, kGetFontSize, &result));
   base::StringToDouble(result, &fontSize);
   ASSERT_FLOAT_EQ(kScale, fontSize/oldFontSize);
 }
 
 }  // namespace dom_distiller