BrowserPlugin Cleanup: Simplify update device scale factor

content/renderer/browser_plugin/browser_plugin_manager.cc

Index: content/renderer/browser_plugin/browser_plugin_manager.cc
diff --git a/content/renderer/browser_plugin/browser_plugin_manager.cc b/content/renderer/browser_plugin/browser_plugin_manager.cc
index d15e18821dd6a4c39560a0abd1936dcc7db199b9..12a569e826cb03b605b44689262a8a64440b6585 100644
--- a/content/renderer/browser_plugin/browser_plugin_manager.cc
+++ b/content/renderer/browser_plugin/browser_plugin_manager.cc
@@ -54,10 +54,10 @@ int BrowserPluginManager::GetNextInstanceID() {
   return ++current_instance_id_;
 }
 
-void BrowserPluginManager::UpdateDeviceScaleFactor(float device_scale_factor) {
+void BrowserPluginManager::UpdateDeviceScaleFactor() {
   IDMap<BrowserPlugin>::iterator iter(&instances_);
   while (!iter.IsAtEnd()) {
-    iter.GetCurrentValue()->UpdateDeviceScaleFactor(device_scale_factor);
+    iter.GetCurrentValue()->UpdateDeviceScaleFactor();
     iter.Advance();
   }
 }