[WebView] initial webview-side implementation of safebrowsing

android_webview/native/aw_contents.cc

Index: android_webview/native/aw_contents.cc
diff --git a/android_webview/native/aw_contents.cc b/android_webview/native/aw_contents.cc
index be85577b629fc0e24a3c68c7db7523a5f0730a8b..bfe2e967317d128d0e4f23719bed417bd32231e7 100644
--- a/android_webview/native/aw_contents.cc
+++ b/android_webview/native/aw_contents.cc
@@ -179,6 +179,13 @@ AwBrowserPermissionRequestDelegate* AwBrowserPermissionRequestDelegate::FromID(
   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),
@@ -1287,6 +1294,8 @@ void AwContents::DidAttachInterstitialPage() {
 
 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();
@@ -1298,4 +1307,12 @@ void AwContents::DidDetachInterstitialPage() {
   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