Set the minimum timer interval on a per-page basis, and adjust it when...

chrome/renderer/render_view.cc

 // Copyright (c) 2011 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 "chrome/renderer/render_view.h"
 
 #include <algorithm>
 #include <cmath>
 #include <string>
 #include <vector>
@@ skipping 167 matching lines @@
 #include "webkit/glue/form_field.h"
 #include "webkit/glue/glue_serialize.h"
 #include "webkit/glue/image_decoder.h"
 #include "webkit/glue/image_resource_fetcher.h"
 #include "webkit/glue/media/video_renderer_impl.h"
 #include "webkit/glue/password_form_dom_manager.h"
 #include "webkit/glue/resource_fetcher.h"
 #include "webkit/glue/site_isolation_metrics.h"
 #include "webkit/glue/webaccessibility.h"
 #include "webkit/glue/webdropdata.h"
+#include "webkit/glue/webkit_constants.h"
 #include "webkit/glue/webkit_glue.h"
 #include "webkit/glue/webmediaplayer_impl.h"
 #include "webkit/plugins/npapi/default_plugin_shared.h"
 #include "webkit/plugins/npapi/plugin_list.h"
 #include "webkit/plugins/npapi/webplugin_delegate.h"
 #include "webkit/plugins/npapi/webplugin_delegate_impl.h"
 #include "webkit/plugins/npapi/webplugin_impl.h"
 #include "webkit/plugins/npapi/webview_plugin.h"
 #include "webkit/plugins/ppapi/ppapi_webplugin_impl.h"
 
@@ skipping 5165 matching lines @@
 }
 
 void RenderView::DidHandleKeyEvent() {
   edit_commands_.clear();
 }
 
 void RenderView::DidHandleMouseEvent(const WebKit::WebMouseEvent& event) {
   FOR_EACH_OBSERVER(RenderViewObserver, observers_, DidHandleMouseEvent(event));
 }
 
-#if defined(OS_MACOSX)
 void RenderView::OnWasHidden() {
   RenderWidget::OnWasHidden();
 
+  if (webview()) {
+    webview()->settings()->setMinimumTimerInterval(
+        webkit_glue::kBackgroundTabTimerInterval);
+  }
+
+#if defined(OS_MACOSX)
   // Inform plugins that their container is no longer visible.
   std::set<WebPluginDelegateProxy*>::iterator plugin_it;
   for (plugin_it = plugin_delegates_.begin();
        plugin_it != plugin_delegates_.end(); ++plugin_it) {
     (*plugin_it)->SetContainerVisibility(false);
   }
+#endif  // OS_MACOSX
 }
 
 void RenderView::OnWasRestored(bool needs_repainting) {
   RenderWidget::OnWasRestored(needs_repainting);
 
+  if (webview()) {
+    webview()->settings()->setMinimumTimerInterval(
+        webkit_glue::kForegroundTabTimerInterval);
+  }
+
+#if defined(OS_MACOSX)
   // Inform plugins that their container is now visible.
   std::set<WebPluginDelegateProxy*>::iterator plugin_it;
   for (plugin_it = plugin_delegates_.begin();
        plugin_it != plugin_delegates_.end(); ++plugin_it) {
     (*plugin_it)->SetContainerVisibility(true);
   }
+#endif  // OS_MACOSX
 }
-#endif  // OS_MACOSX
 
 void RenderView::OnSetFocus(bool enable) {
   RenderWidget::OnSetFocus(enable);
 
   if (webview() && webview()->isActive()) {
     // Notify all NPAPI plugins.
     std::set<WebPluginDelegateProxy*>::iterator plugin_it;
     for (plugin_it = plugin_delegates_.begin();
          plugin_it != plugin_delegates_.end(); ++plugin_it) {
 #if defined(OS_MACOSX)
@@ skipping 271 matching lines @@
   }
 }
 
 void RenderView::OnContextMenuClosed(
     const webkit_glue::CustomContextMenuContext& custom_context) {
   if (custom_context.is_pepper_menu)
     pepper_delegate_.OnContextMenuClosed(custom_context);
   else
     context_menu_node_.reset();
 }