Implement Just-In-Time Flash updates.

chrome/common/render_messages.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Multiply-included file, no traditional include guard.
 #include <stdint.h>
 #include <string>
 #include <vector>
 
 #include "base/files/file_path.h"
@@ skipping 24 matching lines @@
 
 enum class ChromeViewHostMsg_GetPluginInfo_Status {
   kAllowed,
   kBlocked,
   kBlockedByPolicy,
   kDisabled,
   kNotFound,
   kOutdatedBlocked,
   kOutdatedDisallowed,
   kPlayImportantContent,
+  kComponentUpdateRequired,
   kUnauthorized,
 };
 
 namespace IPC {
 
 template <>
 struct ParamTraits<ContentSettingsPattern> {
   typedef ContentSettingsPattern param_type;
   static void GetSize(base::PickleSizer* s, const param_type& p);
   static void Write(base::Pickle* m, const param_type& p);
@@ skipping 349 matching lines @@
 // Notifies a missing plugin placeholder that we have finished downloading
 // the plugin.
 IPC_MESSAGE_ROUTED0(ChromeViewMsg_FinishedDownloadingPlugin)
 
 // Notifies a missing plugin placeholder that there was an error downloading
 // the plugin.
 IPC_MESSAGE_ROUTED1(ChromeViewMsg_ErrorDownloadingPlugin,
                     std::string /* message */)
 #endif  // defined(ENABLE_PLUGIN_INSTALLATION)
 
+// Notifies a missing plugin placeholder that we have finished component-
+// updating the plug-in.
+IPC_MESSAGE_ROUTED0(ChromeViewMsg_PluginComponentUpdateSuccess)
+
+// Notifies a missing plugin placeholder that we have failed to component-update
+// the plug-in.
+IPC_MESSAGE_ROUTED0(ChromeViewMsg_PluginComponentUpdateFailure)
+
+// Notifies a missing plugin placeholder that we have started the component
+// download.
+IPC_MESSAGE_ROUTED0(ChromeViewMsg_PluginComponentUpdateDownloading)
+
 // Notifies a missing plugin placeholder that the user cancelled downloading
 // the plugin.
 IPC_MESSAGE_ROUTED0(ChromeViewMsg_CancelledDownloadingPlugin)
 
 // Tells the browser to open chrome://plugins in a new tab. We use a separate
 // message because renderer processes aren't allowed to directly navigate to
 // chrome:// URLs.
 IPC_MESSAGE_ROUTED0(ChromeViewHostMsg_OpenAboutPlugins)
 
 // Tells the browser that there was an error loading a plugin.
@@ skipping 19 matching lines @@
 // associated with it.
 IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_PageHasOSDD,
                     GURL /* page_url */,
                     GURL /* osdd_url */)
 
 // Notifies when a plugin couldn't be loaded because it's outdated.
 IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_BlockedOutdatedPlugin,
                     int /* placeholder ID */,
                     std::string /* plugin group identifier */)
 
+// Notifies when a plugin couldn't be loaded because it requires a component
+// update.
+IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_BlockedUpdatePlugin,

[Bernhard Bauer, 2016/07/28 10:25:10]

Nit: the name of the message doesn't make much sense... maybe
_BlockedComponentUpdatedPlugin?

[waffles, 2016/07/28 20:06:27]

Done.

+                    int /* placeholder ID */,
+                    std::string /* plugin group identifier */)
+
 // Notifies when a plugin couldn't be loaded because it requires
 // user authorization.
 IPC_MESSAGE_ROUTED2(ChromeViewHostMsg_BlockedUnauthorizedPlugin,
                     base::string16 /* name */,
                     std::string /* plugin group identifier */)
 
 // Message sent from the renderer to the browser to notify it of a
 // window.print() call which should cancel the prerender. The message is sent
 // only when the renderer is prerendering.
 IPC_MESSAGE_ROUTED0(ChromeViewHostMsg_CancelPrerenderForPrinting)
@@ skipping 91 matching lines @@
 
 // Record a sample string to a Rappor metric.
 IPC_MESSAGE_CONTROL2(ChromeViewHostMsg_RecordRappor,
                      std::string /* metric */,
                      std::string /* sample */)
 
 // Record a domain and registry of a url to a Rappor metric.
 IPC_MESSAGE_CONTROL2(ChromeViewHostMsg_RecordRapporURL,
                      std::string /* metric */,
                      GURL /* sample url */)