Plugin Power Saver Tiny: Treat completely obscured plugins as Tiny.

content/renderer/pepper/plugin_power_saver_helper.cc

Index: content/renderer/pepper/plugin_power_saver_helper.cc
diff --git a/content/renderer/pepper/plugin_power_saver_helper.cc b/content/renderer/pepper/plugin_power_saver_helper.cc
index 21f69cd30b290e8a5feec3406e70a03f0cacbaef..a2731bb2108f390820ef17b1ac82353af8ddc151 100644
--- a/content/renderer/pepper/plugin_power_saver_helper.cc
+++ b/content/renderer/pepper/plugin_power_saver_helper.cc
@@ -112,9 +112,7 @@ PluginPowerSaverHelper::GetPeripheralContentStatus(
   auto status = PeripheralContentHeuristic::GetPeripheralStatus(
       origin_whitelist_, main_frame_origin, content_origin, unobscured_size);
 
-  // Never record UNKNOWN_SIZE. Wait for retest after size is known.
-  if (record_decision == RenderFrame::RECORD_DECISION &&
-      status != RenderFrame::CONTENT_STATUS_UNKNOWN_SIZE) {
+  if (record_decision == RenderFrame::RECORD_DECISION) {
     UMA_HISTOGRAM_ENUMERATION(kPeripheralHeuristicHistogram, status,
                               RenderFrame::CONTENT_STATUS_NUM_ITEMS);
   }