4 files changed, 18 insertions, 3 deletions
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 454fffd..cf12f1c 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -184,6 +184,9 @@ const char kDisableLogging[]                = "disable-logging";
 // notification.
 const char kDisableNewTabFirstRun[]         = "disable-new-tab-first-run";
 
+// Prevent outdated plugins from running.
+const char kDisableOutdatedPlugins[]        = "disable-outdated-plugins";
+
 // Prevent plugins from running.
 const char kDisablePlugins[]                = "disable-plugins";
 
diff --git a/chrome/common/chrome_switches.h b/chrome/common/chrome_switches.h
index cc69770..b8f1255 100644
--- a/chrome/common/chrome_switches.h
+++ b/chrome/common/chrome_switches.h
@@ -67,6 +67,7 @@ extern const char kDisableJava[];
 extern const char kDisableLocalStorage[];
 extern const char kDisableLogging[];
 extern const char kDisableNewTabFirstRun[];
+extern const char kDisableOutdatedPlugins[];
 extern const char kDisablePlugins[];
 extern const char kDisablePopupBlocking[];
 extern const char kDisablePromptOnRepost[];
diff --git a/chrome/common/plugin_group.h b/chrome/common/plugin_group.h
index 7990038..d4db0fc 100644
--- a/chrome/common/plugin_group.h
+++ b/chrome/common/plugin_group.h
@@ -28,9 +28,13 @@ struct PluginGroupDefinition {
   const char* update_url;  // Location of latest secure version.
 };
 
+// A PluginGroup can match a range of versions of a specific plugin (as defined
+// by matching a substring of its name).
+// It contains all WebPluginInfo structs (at least one) matching its definition.
+// In addition, it knows about a security "baseline", i.e. the minimum version
+// of a plugin that is needed in order not to exhibit known security
+// vulnerabilities.
 
-// A PluginGroup contains at least one WebPluginInfo.
-// In addition, it knows if the plugin is critically vulnerable.
 class PluginGroup {
  public:
   // Creates a PluginGroup from a PluginGroupDefinition.
@@ -41,7 +45,9 @@ class PluginGroup {
   // definition is found.
   static PluginGroup* FromWebPluginInfo(const WebPluginInfo& wpi);
 
-  // Find a plugin group matching |info| in the list of hardcoded plugins.
+  // Find a plugin group matching |info| in the list of hardcoded plugins and
+  // returns a copy of it if found, or a new group matching exactly this plugin
+  // otherwise.
   static PluginGroup* FindHardcodedPluginGroup(const WebPluginInfo& info);
 
   // Configures the set of plugin names that are disabled by policy.
diff --git a/chrome/common/render_messages_internal.h b/chrome/common/render_messages_internal.h
index ce787dd..a9efdc8 100644
--- a/chrome/common/render_messages_internal.h
+++ b/chrome/common/render_messages_internal.h
@@ -1696,6 +1696,11 @@ IPC_BEGIN_MESSAGES(ViewHost)
   IPC_MESSAGE_ROUTED1(ViewHostMsg_CrashedPlugin,
                       FilePath /* plugin_path */)
 
+  // Notifies when a plugin couldn't be loaded because it's outdated.
+  IPC_MESSAGE_ROUTED2(ViewHostMsg_DisabledOutdatedPlugin,
+                      string16, /* name */
+                      GURL      /* update_url */)
+
   // Displays a JavaScript out-of-memory message in the infobar.
   IPC_MESSAGE_ROUTED0(ViewHostMsg_JSOutOfMemory)