[WebView] initial webview-side implementation of safebrowsing

android_webview/browser/aw_safe_browsing_ui_manager.cc

+// Copyright 2017 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 "android_webview/browser/aw_safe_browsing_ui_manager.h"
+
+#include "content/public/browser/browser_thread.h"
+
+using content::BrowserThread;
+using content::WebContents;
+
+namespace android_webview {
+
+AwSafeBrowsingUIManager::AwSafeBrowsingUIManager() {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+}
+
+AwSafeBrowsingUIManager::~AwSafeBrowsingUIManager() {}
+
+void AwSafeBrowsingUIManager::DisplayBlockingPage(
+    const UnsafeResource& resource) {
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
+
+  WebContents* web_contents = resource.web_contents_getter.Run();
+  // Check the size of the view
+  UIManagerClient* client = UIManagerClient::FromWebContents(web_contents);
+  if (!client || !client->CanShowInterstitial()) {
+    LOG(WARNING) << "The view is not suitable to show the SB interstitial";
+    OnBlockingPageDone(std::vector<UnsafeResource>{resource}, false,
+                       web_contents, resource.url.GetWithEmptyPath());
+    return;
+  }
+  safe_browsing::BaseUIManager::DisplayBlockingPage(resource);
+}
+
+}  // namespace android_webview