Plugin Power Saver: Make PepperPluginInstanceThrottler interface public.

components/plugins/renderer/plugin_placeholder.cc

Index: components/plugins/renderer/plugin_placeholder.cc
diff --git a/components/plugins/renderer/plugin_placeholder.cc b/components/plugins/renderer/plugin_placeholder.cc
index 09b27381df3ff2c32097bcb84d1534c5205f8d0b..555d25da9f290d03482608d8a08bd1b01c579434 100644
--- a/components/plugins/renderer/plugin_placeholder.cc
+++ b/components/plugins/renderer/plugin_placeholder.cc
@@ -68,7 +68,8 @@ PluginPlaceholder::PluginPlaceholder(content::RenderFrame* render_frame,
       is_blocked_for_background_tab_(false),
       is_blocked_for_prerendering_(false),
       is_blocked_for_power_saver_poster_(false),
-      power_saver_mode_(content::RenderFrame::POWER_SAVER_MODE_ESSENTIAL),
+      power_saver_mode_(
+          content::PluginInstanceThrottler::POWER_SAVER_MODE_ESSENTIAL),
       allow_loading_(false),
       hidden_(false),
       finished_loading_(false),
@@ -79,7 +80,8 @@ PluginPlaceholder::~PluginPlaceholder() {}
 
 #if defined(ENABLE_PLUGINS)
 void PluginPlaceholder::DisablePowerSaverForInstance() {
-  power_saver_mode_ = content::RenderFrame::POWER_SAVER_MODE_ESSENTIAL;
+  power_saver_mode_ =
+      content::PluginInstanceThrottler::POWER_SAVER_MODE_ESSENTIAL;
   if (is_blocked_for_power_saver_poster_) {
     is_blocked_for_power_saver_poster_ = false;
     if (!LoadingBlocked())
@@ -247,11 +249,19 @@ void PluginPlaceholder::LoadPlugin() {
     return;
   }
 
+  content::PluginInstanceThrottler* throttler = nullptr;
+#if defined(ENABLE_PLUGINS)
+  if (power_saver_mode_ !=
+      content::PluginInstanceThrottler::POWER_SAVER_MODE_ESSENTIAL) {
+    throttler = new content::PluginInstanceThrottler(
+        render_frame(), plugin_params_.url, power_saver_mode_);
+  }
+#endif
   // TODO(mmenke):  In the case of prerendering, feed into
   //                ChromeContentRendererClient::CreatePlugin instead, to
   //                reduce the chance of future regressions.
-  WebPlugin* plugin = render_frame()->CreatePlugin(
-      frame_, plugin_info_, plugin_params_, power_saver_mode_);
+  WebPlugin* plugin = render_frame()->CreatePlugin(frame_, plugin_info_,
+                                                   plugin_params_, throttler);
   ReplacePlugin(plugin);
 }