[ios] Add InterstitialPageDelegate::OverrideItem to mirror Desktop.

On iOS transient navigation item is updated in Tab after presenting
SSL interstitial. On Destop it is done in InterstitialPageImpl::Show by
calling InterstitialPageDelegate::OverrideItem, delegating the change
to SSLBlockingPage.

This CL makes iOS follow the same approach as other platforms.
Downstream CL: https://chromereviews.googleplex.com/396387014

BUG=602298

Review URL: https://codereview.chromium.org/1878053002

Cr-Commit-Position: refs/heads/master@{#386920}

ios/chrome/browser/DEPS

@@ -102,5 +102,6 @@ include_rules = [
   # Strings and resources.
   "+components/grit",
   "+components/strings/grit",
+  "+grit/components_strings.h",
   "+ios/chrome/grit",
 ]

ios/chrome/browser/ssl/ios_ssl_blocking_page.h

@@ -50,6 +50,7 @@ class IOSSSLBlockingPage : public IOSSecurityInterstitialPage {
   void CommandReceived(const std::string& command) override;
   void OnProceed() override;
   void OnDontProceed() override;
+  void OverrideItem(web::NavigationItem* item) override;
 
   // SecurityInterstitialPage implementation:
   bool ShouldCreateNewNavigation() const override;

ios/chrome/browser/ssl/ios_ssl_blocking_page.mm

@@ -12,11 +12,15 @@
 #include "base/strings/utf_string_conversions.h"
 #include "components/security_interstitials/core/metrics_helper.h"
 #include "components/security_interstitials/core/ssl_error_ui.h"
+#include "grit/components_strings.h"
 #include "ios/chrome/browser/browser_state/chrome_browser_state.h"
 #include "ios/chrome/browser/interstitials/ios_chrome_controller_client.h"
 #include "ios/chrome/browser/interstitials/ios_chrome_metrics_helper.h"
 #include "ios/chrome/grit/ios_strings.h"
 #include "ios/public/provider/chrome/browser/browser_constants.h"
+#include "ios/web/public/cert_store.h"
+#import "ios/web/public/navigation_item.h"
+#include "ios/web/public/ssl_status.h"
 #include "ios/web/public/web_state/web_state.h"
 #include "net/base/net_errors.h"
 #include "ui/base/l10n/l10n_util.h"
@@ -180,6 +184,19 @@ void RecordSSLExpirationPageEventState(bool expired_but_previously_allowed,
   NotifyDenyCertificate();
 }
 
+void IOSSSLBlockingPage::OverrideItem(web::NavigationItem* item) {
+  item->SetTitle(l10n_util::GetStringUTF16(IDS_SSL_V2_TITLE));
+
+  item->GetSSL().security_style = web::SECURITY_STYLE_AUTHENTICATION_BROKEN;
+  item->GetSSL().cert_status = ssl_info_.cert_status;
+  // On iOS cert may be null when it is not provided by API callback or can not
+  // be parsed.
+  if (ssl_info_.cert) {
+    item->GetSSL().cert_id = web::CertStore::GetInstance()->StoreCert(
+        ssl_info_.cert.get(), web_state()->GetCertGroupId());
+  }
+}
+
 void IOSSSLBlockingPage::NotifyDenyCertificate() {
   // It's possible that callback_ may not exist if the user clicks "Proceed"
   // followed by pressing the back button before the interstitial is hidden.

ios/web/interstitials/web_interstitial_impl.mm

@@ -61,6 +61,9 @@
     CRWSessionController* sessionController =
         navigation_manager_->GetSessionController();
     [sessionController addTransientEntryWithURL:url_];
+
+    // Give delegates a chance to set some states on the navigation item.
+    GetDelegate()->OverrideItem(navigation_manager_->GetTransientItem());
   }
 }
 

ios/web/public/interstitials/web_interstitial_delegate.h

@@ -12,6 +12,8 @@
 
 namespace web {
 
+class NavigationItem;
+
 // Superclass for delegates that provide data to a WebInterstitial.  After the
 // WebInterstitial is shown, it takes ownership of its delegate.
 class WebInterstitialDelegate {
@@ -23,6 +25,13 @@ class WebInterstitialDelegate {
   // on WebInterstitial, since navigations etc may cancel them.
   virtual void OnProceed() {}
   virtual void OnDontProceed() {}
+
+  // Called with the NavigationItem that is going to be added to the navigation
+  // manager.
+  // Gives an opportunity to delegates to set states on the |item|.
+  // Note that this is only called if the WebInterstitial was constructed with
+  // |new_navigation| set to true.
+  virtual void OverrideItem(NavigationItem* item) {}
 };
 
 // Provides HTML to an HTMLWebInterstitialImpl.

ios/web/public/test/test_web_state.h

@@ -45,6 +45,7 @@ class TestWebState : public WebState {
   CRWWebViewProxyType GetWebViewProxy() const override;
   bool IsShowingWebInterstitial() const override;
   WebInterstitial* GetWebInterstitial() const override;
+  int GetCertGroupId() const override;
   void AddObserver(WebStateObserver* observer) override {}
   void RemoveObserver(WebStateObserver* observer) override {}
   void AddPolicyDecider(WebStatePolicyDecider* decider) override {}

ios/web/public/test/test_web_state.mm

@@ -62,6 +62,10 @@
   return nullptr;
 }
 
+int TestWebState::GetCertGroupId() const {
+  return 0;
+}
+
 void TestWebState::SetContentIsHTML(bool content_is_html) {
   content_is_html_ = content_is_html;
 }

ios/web/public/web_state/web_state.h

@@ -151,6 +151,9 @@ class WebState : public base::SupportsUserData {
   // Returns the currently visible WebInterstitial if one is shown.
   virtual WebInterstitial* GetWebInterstitial() const = 0;
 
+  // Returns the unique ID to use with web::CertStore.
+  virtual int GetCertGroupId() const = 0;
+
   // Callback used to handle script commands.
   // The callback must return true if the command was handled, and false
   // otherwise.

ios/web/web_state/web_state_impl.h

@@ -233,6 +233,7 @@ class WebStateImpl : public WebState, public NavigationManagerDelegate {
   void ShowTransientContentView(CRWContentView* content_view) override;
   bool IsShowingWebInterstitial() const override;
   WebInterstitial* GetWebInterstitial() const override;
+  int GetCertGroupId() const override;
   void AddScriptCommandCallback(const ScriptCommandCallback& callback,
                                 const std::string& command_prefix) override;
   void RemoveScriptCommandCallback(const std::string& command_prefix) override;

ios/web/web_state/web_state_impl.mm

@@ -298,6 +298,10 @@
   return interstitial_;
 }
 
+int WebStateImpl::GetCertGroupId() const {
+  return request_tracker_->identifier();
+}
+
 net::HttpResponseHeaders* WebStateImpl::GetHttpResponseHeaders() const {
   return http_response_headers_.get();
 }