Catch CSP violations in InProcessBrowserTest

chrome/test/base/in_process_browser_test.h

Index: chrome/test/base/in_process_browser_test.h
diff --git a/chrome/test/base/in_process_browser_test.h b/chrome/test/base/in_process_browser_test.h
index ae3d8e9c57a5ef4c1daaf139ca6b89195d17e558..efa5101affdd19590bda0080cffbaa5c0b070c9b 100644
--- a/chrome/test/base/in_process_browser_test.h
+++ b/chrome/test/base/in_process_browser_test.h
@@ -14,6 +14,7 @@
 #include "content/public/browser/web_contents.h"
 #include "content/public/test/browser_test.h"
 #include "content/public/test/browser_test_base.h"
+#include "content/public/test/content_browser_test_utils.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/page_transition_types.h"
 
@@ -158,6 +159,10 @@ class InProcessBrowserTest : public content::BrowserTestBase {
   // successful.
   virtual bool SetUpUserDataDirectory() WARN_UNUSED_RESULT;
 
+  // After the test, assert whether CSP error messages should've shown up during
+  // the test. Default false. If you expect these errors, set to true.
+  void SetExpectCSPErrorMessages(bool expect);
+
   // BrowserTestBase:
   void RunTestOnMainThreadLoop() override;
 
@@ -247,6 +252,11 @@ class InProcessBrowserTest : public content::BrowserTestBase {
   // True if the about:blank tab should be opened when the browser is launched.
   bool open_about_blank_on_browser_launch_;
 
+  // True if CSP error messages are expected. Fail the test if not matching.
+  bool expect_csp_messages_;
+
+  content::ConsoleObserverDelegate* console_delegate_;
+
   // True if the accessibility test should run for a particular test case.
   // This is reset for every test case.
   bool run_accessibility_checks_for_test_case_;