Revert 86569 - Enabling page visibility api in the chrome browser.

content/renderer/render_view.cc

Index: content/renderer/render_view.cc
===================================================================
--- content/renderer/render_view.cc	(revision 86573)
+++ content/renderer/render_view.cc	(working copy)
@@ -3878,7 +3878,6 @@
   if (webview()) {
     webview()->settings()->setMinimumTimerInterval(
         webkit_glue::kBackgroundTabTimerInterval);
-    webview()->setVisibilityState(WebKit::WebPageVisibilityStateHidden, false);
   }
 
 #if defined(OS_MACOSX)
@@ -3897,7 +3896,6 @@
   if (webview()) {
     webview()->settings()->setMinimumTimerInterval(
         webkit_glue::kForegroundTabTimerInterval);
-    webview()->setVisibilityState(WebKit::WebPageVisibilityStateVisible, false);
   }
 
 #if defined(OS_MACOSX)
@@ -4098,13 +4096,6 @@
                                               title));
 }
 
-WebKit::WebPageVisibilityState RenderView::visibilityState() const {
-  if (is_hidden())
-    return WebKit::WebPageVisibilityStateHidden;
-  else
-    return WebKit::WebPageVisibilityStateVisible;
-}
-
 bool RenderView::IsNonLocalTopLevelNavigation(
     const GURL& url, WebKit::WebFrame* frame, WebKit::WebNavigationType type) {
   // Must be a top level frame.