Whitelist Widevine CDM for plugin UMA on all platforms.

chrome/renderer/pepper/pepper_uma_host.h

Index: chrome/renderer/pepper/pepper_uma_host.h
diff --git a/chrome/renderer/pepper/pepper_uma_host.h b/chrome/renderer/pepper/pepper_uma_host.h
index 8d81cd85cd6995b363cc12a7171d793ad4089e5a..b3edff45a48aeaa9bd9c0ae4acfcf22261b70efb 100644
--- a/chrome/renderer/pepper/pepper_uma_host.h
+++ b/chrome/renderer/pepper/pepper_uma_host.h
@@ -70,8 +70,8 @@ class PepperUMAHost : public ppapi::host::ResourceHost {
   std::set<std::string> allowed_origins_;
   // Set of hashed histogram prefixes that can be used from this interface.
   std::set<std::string> allowed_histogram_prefixes_;
-  // Set of plugin files names that are allowed to use this interface.
-  std::set<std::string> allowed_plugin_base_names_;
+  // Set of plugin file name patterns that are allowed to use this interface.
+  std::set<std::string> allowed_plugin_name_patterns_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperUMAHost);
 };