Implement Just-In-Time Flash updates.

chrome/browser/plugins/plugin_info_message_filter.cc

Index: chrome/browser/plugins/plugin_info_message_filter.cc
diff --git a/chrome/browser/plugins/plugin_info_message_filter.cc b/chrome/browser/plugins/plugin_info_message_filter.cc
index 6f6e18fd1c146abba9a960857812b3174e2e28e2..06a7755d7e3580dd7ae56b1399c6e2f8a033686e 100644
--- a/chrome/browser/plugins/plugin_info_message_filter.cc
+++ b/chrome/browser/plugins/plugin_info_message_filter.cc
@@ -12,6 +12,7 @@
 #include "base/bind.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/task_runner_util.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
@@ -24,6 +25,7 @@
 #include "chrome/browser/ui/browser_otr_state.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/render_messages.h"
+#include "components/component_updater/component_updater_service.h"
 #include "components/content_settings/core/browser/content_settings_utils.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/content_settings/core/browser/plugins_field_trial.h"
@@ -251,32 +253,32 @@ void PluginInfoMessageFilter::PluginsLoaded(
     const GetPluginInfo_Params& params,
     IPC::Message* reply_msg,
     const std::vector<WebPluginInfo>& plugins) {
-  ChromeViewHostMsg_GetPluginInfo_Output output;
+  std::unique_ptr<ChromeViewHostMsg_GetPluginInfo_Output> output(
+      new ChromeViewHostMsg_GetPluginInfo_Output());
   // This also fills in |actual_mime_type|.
   std::unique_ptr<PluginMetadata> plugin_metadata;
   if (context_.FindEnabledPlugin(params.render_frame_id, params.url,
                                  params.top_origin_url, params.mime_type,
-                                 &output.status, &output.plugin,
-                                 &output.actual_mime_type,
-                                 &plugin_metadata)) {
-    context_.DecidePluginStatus(params, output.plugin, plugin_metadata.get(),
-                                &output.status);
+                                 &output->status, &output->plugin,
+                                 &output->actual_mime_type, &plugin_metadata)) {
+    context_.DecidePluginStatus(params, output->plugin, plugin_metadata.get(),
+                                &output->status);
   }
 
-  if (plugin_metadata) {
-    output.group_identifier = plugin_metadata->identifier();
-    output.group_name = plugin_metadata->name();
-  }
-
-  context_.MaybeGrantAccess(output.status, output.plugin.path);
-
-  ChromeViewHostMsg_GetPluginInfo::WriteReplyParams(reply_msg, output);
-  Send(reply_msg);
-  if (output.status !=
-      ChromeViewHostMsg_GetPluginInfo_Status::kNotFound) {
-    main_thread_task_runner_->PostTask(
-        FROM_HERE, base::Bind(&ReportMetrics, output.actual_mime_type,
-                              params.url, params.top_origin_url));
+  if (output->status == ChromeViewHostMsg_GetPluginInfo_Status::kNotFound) {
+    // Check to see if the component updater can fetch an implementation.
+    base::PostTaskAndReplyWithResult(
+        main_thread_task_runner_.get(), FROM_HERE,
+        base::Bind(
+            &component_updater::ComponentUpdateService::GetComponentForMimeType,
+            base::Unretained(g_browser_process->component_updater()),
+            params.mime_type),
+        base::Bind(&PluginInfoMessageFilter::ComponentPluginLookupDone, this,
+                   params, base::Passed(&output),
+                   base::Passed(&plugin_metadata), reply_msg));
+  } else {
+    GetPluginInfoReply(params, std::move(output), std::move(plugin_metadata),
+                       reply_msg);
   }
 }
 
@@ -316,7 +318,7 @@ void PluginInfoMessageFilter::OnIsInternalPluginAvailableForMimeType(
       mime_type, is_plugin_disabled ? PLUGIN_DISABLED : PLUGIN_NOT_REGISTERED);
 }
 
-#endif // defined(ENABLE_PEPPER_CDMS)
+#endif  // defined(ENABLE_PEPPER_CDMS)
 
 void PluginInfoMessageFilter::Context::DecidePluginStatus(
     const GetPluginInfo_Params& params,
@@ -404,7 +406,6 @@ void PluginInfoMessageFilter::Context::DecidePluginStatus(
     if (extensions::WebViewRendererState::GetInstance()->IsGuest(
             render_process_id_))
       *status = ChromeViewHostMsg_GetPluginInfo_Status::kUnauthorized;
-
   }
 #endif
 }
@@ -460,6 +461,44 @@ bool PluginInfoMessageFilter::Context::FindEnabledPlugin(
   return enabled;
 }
 
+void PluginInfoMessageFilter::ComponentPluginLookupDone(
+    const GetPluginInfo_Params& params,
+    std::unique_ptr<ChromeViewHostMsg_GetPluginInfo_Output> output,
+    std::unique_ptr<PluginMetadata> plugin_metadata,
+    IPC::Message* reply_msg,
+    std::unique_ptr<component_updater::ComponentInfo> cus_plugin_info) {
+  if (cus_plugin_info) {
+    output->status =
+        ChromeViewHostMsg_GetPluginInfo_Status::kComponentUpdateRequired;
+    plugin_metadata.reset(new PluginMetadata(
+        cus_plugin_info->id, cus_plugin_info->name, false, GURL(), GURL(),
+        base::ASCIIToUTF16(cus_plugin_info->id), std::string()));
+  }
+  GetPluginInfoReply(params, std::move(output), std::move(plugin_metadata),
+                     reply_msg);
+}
+
+void PluginInfoMessageFilter::GetPluginInfoReply(
+    const GetPluginInfo_Params& params,
+    std::unique_ptr<ChromeViewHostMsg_GetPluginInfo_Output> output,
+    std::unique_ptr<PluginMetadata> plugin_metadata,
+    IPC::Message* reply_msg) {
+  if (plugin_metadata) {
+    output->group_identifier = plugin_metadata->identifier();
+    output->group_name = plugin_metadata->name();
+  }
+
+  context_.MaybeGrantAccess(output->status, output->plugin.path);
+
+  ChromeViewHostMsg_GetPluginInfo::WriteReplyParams(reply_msg, *output);
+  Send(reply_msg);
+  if (output->status != ChromeViewHostMsg_GetPluginInfo_Status::kNotFound) {
+    main_thread_task_runner_->PostTask(
+        FROM_HERE, base::Bind(&ReportMetrics, output->actual_mime_type,
+                              params.url, params.top_origin_url));
+  }
+}
+
 void PluginInfoMessageFilter::Context::GetPluginContentSetting(
     const WebPluginInfo& plugin,
     const GURL& policy_url,