Refactor BrowserViewRenderer to support page visibility

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 "android_webview/browser/aw_browser_context.h"
 #include "android_webview/browser/aw_browser_main_parts.h"
@@ skipping 845 matching lines @@
 void AwContents::OnAttachedToWindow(JNIEnv* env, jobject obj, int w, int h) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   browser_view_renderer_.OnAttachedToWindow(w, h);
 }
 
 void AwContents::OnDetachedFromWindow(JNIEnv* env, jobject obj) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   browser_view_renderer_.OnDetachedFromWindow();
 }
 
+bool AwContents::IsVisible(JNIEnv* env, jobject obj) {
+  return browser_view_renderer_.IsVisible();
+}
+
 void AwContents::DetachFunctorFromView() {
   JNIEnv* env = AttachCurrentThread();
   ScopedJavaLocalRef<jobject> obj = java_ref_.get(env);
   if (!obj.is_null())
     Java_AwContents_detachFunctorFromView(env, obj.obj());
 }
 
 base::android::ScopedJavaLocalRef<jbyteArray>
 AwContents::GetOpaqueState(JNIEnv* env, jobject obj) {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
@@ skipping 340 matching lines @@
   content::ChildProcessSecurityPolicy::GetInstance()->GrantScheme(
       web_contents_->GetRenderProcessHost()->GetID(), url::kFileScheme);
 }
 
 void SetShouldDownloadFavicons(JNIEnv* env,
                                const JavaParamRef<jclass>& jclazz) {
   g_should_download_favicons = true;
 }
 
 }  // namespace android_webview