Plugin Power Saver: Throttle 'large' plugins that appear small.

chrome/renderer/plugins/plugin_preroller.cc

Index: chrome/renderer/plugins/plugin_preroller.cc
diff --git a/chrome/renderer/plugins/plugin_preroller.cc b/chrome/renderer/plugins/plugin_preroller.cc
index a98e77738da7197950fa75940b9b1f579f0c6a98..55754fd29c3f069a6a21717600c5a8acb872ddeb 100644
--- a/chrome/renderer/plugins/plugin_preroller.cc
+++ b/chrome/renderer/plugins/plugin_preroller.cc
@@ -52,16 +52,20 @@ void PluginPreroller::OnKeyframeExtracted(const SkBitmap* bitmap) {
   std::string data_url_body;
   base::Base64Encode(png_as_string, &data_url_body);
   keyframe_data_url_ = GURL(data_url_header + data_url_body);
+  keyframe_size_.SetSize(bitmap->width(), bitmap->height());
 }
 
 void PluginPreroller::OnThrottleStateChange() {
   if (!throttler_->IsThrottled())
     return;
 
+  keyframe_size_.SetToMin(throttler_->GetSize());
+
   ChromePluginPlaceholder* placeholder =
       ChromePluginPlaceholder::CreateBlockedPlugin(
           render_frame(), frame_, params_, info_, identifier_, name_,
-          IDR_PLUGIN_POSTER_HTML, message_, keyframe_data_url_.spec(), GURL());
+          IDR_PLUGIN_POSTER_HTML, message_, keyframe_data_url_.spec(), GURL(),
+          keyframe_size_);
   placeholder->SetPremadePlugin(throttler_);
   placeholder->set_power_saver_enabled(true);
   placeholder->set_allow_loading(true);