Hide the page info dialog if the underlying webcontents is hidden.

content/browser/android/web_contents_observer_proxy.cc

 // Copyright 2015 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 "content/browser/android/web_contents_observer_proxy.h"
 
 #include <string>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
@@ skipping 276 matching lines @@
       env, obj, is_provisional_load, is_main_frame, error_code,
       jstring_error_description, jstring_url, was_ignored_by_handler);
 }
 
 void WebContentsObserverProxy::DidFirstVisuallyNonEmptyPaint() {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> obj(java_observer_);
   Java_WebContentsObserverProxy_didFirstVisuallyNonEmptyPaint(env, obj);
 }
 
+void WebContentsObserverProxy::WasShown() {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj(java_observer_);
+  Java_WebContentsObserverProxy_wasShown(env, obj);
+}
+
+void WebContentsObserverProxy::WasHidden() {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj(java_observer_);
+  Java_WebContentsObserverProxy_wasHidden(env, obj);
+}
+
 void WebContentsObserverProxy::DidStartNavigationToPendingEntry(
     const GURL& url,
     ReloadType reload_type) {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> obj(java_observer_);
   ScopedJavaLocalRef<jstring> jstring_url(
       ConvertUTF8ToJavaString(env, url.spec()));
 
   Java_WebContentsObserverProxy_didStartNavigationToPendingEntry(env, obj,
                                                                  jstring_url);
@@ skipping 37 matching lines @@
     // a base URL if there has been a loadUrl("javascript:...") after
     // loadDataWithBaseUrl.
     *url = base_url_of_last_started_data_url_.possibly_invalid_spec();
   }
 }
 
 bool RegisterWebContentsObserverProxy(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 }  // namespace content