Plugin Power Saver: Unthrottle dynamically sized plugins correctly.

content/renderer/pepper/plugin_instance_throttler_impl.cc

Index: content/renderer/pepper/plugin_instance_throttler_impl.cc
diff --git a/content/renderer/pepper/plugin_instance_throttler_impl.cc b/content/renderer/pepper/plugin_instance_throttler_impl.cc
index a73a22436e388711b0e4afa2cee49dff6d729a6f..096b81f6b71b06442bdf6fea77a0623b60c5ca15 100644
--- a/content/renderer/pepper/plugin_instance_throttler_impl.cc
+++ b/content/renderer/pepper/plugin_instance_throttler_impl.cc
@@ -21,6 +21,11 @@ namespace content {
 
 namespace {
 
+// Maximum dimensions plugin content may have while still being considered
+// peripheral content.
+const int kPeripheralContentMaxWidth = 398;
+const int kPeripheralContentMaxHeight = 298;
+
 // Threshold for 'boring' score to accept a frame as good enough to be a
 // representative keyframe. Units are the ratio of all pixels that are within
 // the most common luma bin. The same threshold is used for history thumbnails.
@@ -49,6 +54,12 @@ void PluginInstanceThrottler::RecordUnthrottleMethodMetric(
       PluginInstanceThrottler::UNTHROTTLE_METHOD_NUM_ITEMS);
 }
 
+// static
+bool PluginInstanceThrottler::IsLargeContent(int width, int height) {
+  return width >= kPeripheralContentMaxWidth &&
+         height >= kPeripheralContentMaxHeight;
+}
+
 PluginInstanceThrottlerImpl::PluginInstanceThrottlerImpl()
     : state_(THROTTLER_STATE_AWAITING_KEYFRAME),
       is_hidden_for_placeholder_(false),