Remove InsecureContentInfobarDelegate, which has been broken for a while

chrome/browser/ssl/ssl_browser_tests.cc

Index: chrome/browser/ssl/ssl_browser_tests.cc
diff --git a/chrome/browser/ssl/ssl_browser_tests.cc b/chrome/browser/ssl/ssl_browser_tests.cc
index 2d93d117ed3b5e28b2e1305a2a679a5e03933c2a..39e4f6b1bb17263ce205d8da08d6df08977ebf4d 100644
--- a/chrome/browser/ssl/ssl_browser_tests.cc
+++ b/chrome/browser/ssl/ssl_browser_tests.cc
@@ -610,9 +610,10 @@ class SSLUITestBlock : public SSLUITest {
  public:
   SSLUITestBlock() : SSLUITest() {}
 
-  // Browser will neither run nor display insecure content.
+  // Browser will not run insecure content.
   void SetUpCommandLine(base::CommandLine* command_line) override {
-    command_line->AppendSwitch(switches::kNoDisplayingInsecureContent);
+    // By overriding SSLUITest, we won't apply the flag that allows running
+    // insecure content.
   }
 };
 
@@ -2344,25 +2345,6 @@ IN_PROC_BROWSER_TEST_F(SSLUITest, TestUnsafeImageWithUserException) {
   EXPECT_GT(img_width, 100);
 }
 
-// Test that when the browser blocks displaying insecure content (images), the
-// indicator shows a secure page, because the blocking made the otherwise
-// unsafe page safe (the notification of this state is handled by other means).
-IN_PROC_BROWSER_TEST_F(SSLUITestBlock, TestBlockDisplayingInsecureImage) {
-  ASSERT_TRUE(embedded_test_server()->Start());
-  ASSERT_TRUE(https_server_.Start());
-
-  std::string replacement_path;
-  GetFilePathWithHostAndPortReplacement(
-      "/ssl/page_displays_insecure_content.html",
-      embedded_test_server()->host_port_pair(), &replacement_path);
-
-  ui_test_utils::NavigateToURL(browser(),
-                               https_server_.GetURL(replacement_path));
-
-  CheckAuthenticatedState(browser()->tab_strip_model()->GetActiveWebContents(),
-                          AuthState::NONE);
-}
-
 // Test that when the browser blocks displaying insecure content (iframes), the
 // indicator shows a secure page, because the blocking made the otherwise
 // unsafe page safe (the notification of this state is handled by other means)