[WebView] initial webview-side implementation of safebrowsing

android_webview/native/aw_contents.cc

 // Copyright 2012 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/native/aw_contents.h"
 
 #include <limits>
 #include <utility>
 
 #include "android_webview/browser/aw_browser_context.h"
@@ skipping 161 matching lines @@
 // static
 AwBrowserPermissionRequestDelegate* AwBrowserPermissionRequestDelegate::FromID(
     int render_process_id, int render_frame_id) {
   AwContents* aw_contents = AwContents::FromWebContents(
       content::WebContents::FromRenderFrameHost(
           content::RenderFrameHost::FromID(render_process_id,
                                            render_frame_id)));
   return aw_contents;
 }
 
+// static
+AwSafeBrowsingUIManager::UIManagerClient*
+AwSafeBrowsingUIManager::UIManagerClient::FromWebContents(
+    WebContents* web_contents) {
+  return AwContents::FromWebContents(web_contents);
+}
+
 AwContents::AwContents(std::unique_ptr<WebContents> web_contents)
     : content::WebContentsObserver(web_contents.get()),
       functor_(nullptr),
       browser_view_renderer_(
           this,
           BrowserThread::GetTaskRunnerForThread(BrowserThread::UI)),
       web_contents_(std::move(web_contents)),
       renderer_manager_key_(GLViewRendererManager::GetInstance()->NullKey()) {
   base::subtle::NoBarrier_AtomicIncrement(&g_instance_count, 1);
   icon_helper_.reset(new IconHelper(web_contents_.get()));
@@ skipping 1088 matching lines @@
 void AwContents::DidAttachInterstitialPage() {
   CompositorID compositor_id;
   RenderFrameHost* rfh = web_contents_->GetInterstitialPage()->GetMainFrame();
   compositor_id.process_id = rfh->GetProcess()->GetID();
   compositor_id.routing_id = rfh->GetRenderViewHost()->GetRoutingID();
   browser_view_renderer_.SetActiveCompositorID(compositor_id);
 }
 
 void AwContents::DidDetachInterstitialPage() {
   CompositorID compositor_id;
+  if (!web_contents_)
+    return;
   if (web_contents_->GetRenderProcessHost() &&
       web_contents_->GetRenderViewHost()) {
     compositor_id.process_id = web_contents_->GetRenderProcessHost()->GetID();
     compositor_id.routing_id =
         web_contents_->GetRenderViewHost()->GetRoutingID();
   } else {
     LOG(WARNING) << "failed setting the compositor on detaching interstitital";
   }
   browser_view_renderer_.SetActiveCompositorID(compositor_id);
 }
 
+bool AwContents::CanShowInterstitial() {
+  JNIEnv* env = AttachCurrentThread();
+  const ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
+  if (obj.is_null())
+    return false;
+  return Java_AwContents_canShowInterstitial(env, obj);
+}
+
 }  // namespace android_webview