Add support for Flash Player Component updates on Linux

chrome/common/chrome_content_client.h

Index: chrome/common/chrome_content_client.h
diff --git a/chrome/common/chrome_content_client.h b/chrome/common/chrome_content_client.h
index 38c14d6824a44a710da78fcbf02d3c5d14994d05..af2d61e7d97cf818e4e91a23b51735b258f143ae 100644
--- a/chrome/common/chrome_content_client.h
+++ b/chrome/common/chrome_content_client.h
@@ -48,6 +48,13 @@ class ChromeContentClient : public content::ContentClient {
       content::PepperPluginInfo::GetInterfaceFunc get_interface,
       content::PepperPluginInfo::PPP_InitializeModuleFunc initialize_module,
       content::PepperPluginInfo::PPP_ShutdownModuleFunc shutdown_module);
+
+  // This returns the most recent plugin based on the plugin versions.
+  // It does not make sense to call this on a vector that contains more than one
+  // plugin type. This function may return a nullptr if given an empty vector.
+  // The method is only visible for testing purposes.
+  static content::PepperPluginInfo* FindMostRecentPlugin(
+      const std::vector<content::PepperPluginInfo*>& plugins);
 #endif
 
   void SetActiveURL(const GURL& url) override;