Keep event page alive when there's some Pepper plugin on it.

BUG=472532

Review URL: https://codereview.chromium.org/1117023002

Cr-Commit-Position: refs/heads/master@{#331945}

5 files changed, 95 insertions, 0 deletions

diff --git a/ppapi/tests/extensions/extensions.gyp b/ppapi/tests/extensions/extensions.gyp
index 6d85a94..37b2316 100644
--- a/ppapi/tests/extensions/extensions.gyp
+++ b/ppapi/tests/extensions/extensions.gyp
@@ -27,6 +27,26 @@
       },
     },
     {
+      'target_name': 'ppapi_tests_extensions_load_unload',
+      'type': 'none',
+      'variables': {
+        'nexe_target': 'ppapi_tests_extensions_load_unload',
+        # Only newlib build is used in tests, no need to build others.
+        'build_newlib': 1,
+        'build_glibc': 0,
+        'build_pnacl_newlib': 0,
+        'nexe_destination_dir': 'test_data/ppapi/tests/extensions/load_unload',
+        'sources': [
+          'load_unload/load_unload.cc',
+        ],
+        'test_files': [
+          'load_unload/background.js',
+          'load_unload/ext_icon.png',
+          'load_unload/manifest.json',
+        ],
+      },
+    },
+    {
       'target_name': 'ppapi_tests_extensions_media_galleries',
       'type': 'none',
       'variables': {
diff --git a/ppapi/tests/extensions/load_unload/background.js b/ppapi/tests/extensions/load_unload/background.js
new file mode 100644
index 0000000..a77dcd0
--- /dev/null
+++ b/ppapi/tests/extensions/load_unload/background.js
@@ -0,0 +1,36 @@
+// Copyright 2015 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.
+
+var nacl = null;
+
+function loadNaClModule() {
+  nacl = document.createElement('embed');
+  nacl.addEventListener('load', onNaClModuleLoaded, true);
+  nacl.type = 'application/x-nacl';
+  nacl.width = 0;
+  nacl.height = 0;
+  nacl.src = 'ppapi_tests_extensions_load_unload.nmf';
+  document.body.appendChild(nacl);
+
+  // Request the offsetTop property to force a relayout. As of Apr 10, 2014
+  // this is needed if the module is being loaded in a background page (see
+  // crbug.com/350445).
+  nacl.offsetTop;
+}
+
+function detachNaClModule() {
+  document.body.removeChild(nacl);
+  nacl = null;
+}
+
+function onNaClModuleLoaded() {
+  chrome.test.sendMessage("nacl_module_loaded");
+}
+
+chrome.browserAction.onClicked.addListener(function(tab) {
+  if (!nacl)
+    loadNaClModule();
+  else
+    detachNaClModule();
+});
diff --git a/ppapi/tests/extensions/load_unload/ext_icon.png b/ppapi/tests/extensions/load_unload/ext_icon.png
new file mode 100644
index 0000000..e3cdb8a
--- /dev/null
+++ b/ppapi/tests/extensions/load_unload/ext_icon.png
diff --git a/ppapi/tests/extensions/load_unload/load_unload.cc b/ppapi/tests/extensions/load_unload/load_unload.cc
new file mode 100644
index 0000000..f16abbc
--- /dev/null
+++ b/ppapi/tests/extensions/load_unload/load_unload.cc
@@ -0,0 +1,25 @@
+// Copyright 2015 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.
+
+#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/module.h"
+
+namespace {
+
+class Module : public pp::Module {
+ public:
+  virtual pp::Instance* CreateInstance(PP_Instance instance) {
+    return new pp::Instance(instance);
+  }
+};
+
+}  // namespace
+
+namespace pp {
+
+Module* CreateModule() {
+  return new ::Module();
+}
+
+}  // namespace pp
diff --git a/ppapi/tests/extensions/load_unload/manifest.json b/ppapi/tests/extensions/load_unload/manifest.json
new file mode 100644
index 0000000..33d12da
--- /dev/null
+++ b/ppapi/tests/extensions/load_unload/manifest.json
@@ -0,0 +1,14 @@
+{
+  "name": "Lazy background wait for NaCl test",
+  "description": "Tests that a lazy background page stays alive while a NaCl module exists in its DOM",
+  "version": "0",
+  "manifest_version": 2,
+  "background": {
+    "scripts": ["background.js"],
+    "persistent": false
+  },
+  "browser_action": {
+    "default_icon" : "ext_icon.png",
+    "default_title": "Open Extensions window"
+  }
+}