Browser Plugin: Add HTML5-like postMessage support

content/renderer/browser_plugin/browser_plugin_browsertest.cc

Index: content/renderer/browser_plugin/browser_plugin_browsertest.cc
diff --git a/content/renderer/browser_plugin/browser_plugin_browsertest.cc b/content/renderer/browser_plugin/browser_plugin_browsertest.cc
index 6d23e0cade9a60e29e69858877d2a91a49377dde..d6f7109b16f20c659b039fd9714ef5d3f8aec131 100644
--- a/content/renderer/browser_plugin/browser_plugin_browsertest.cc
+++ b/content/renderer/browser_plugin/browser_plugin_browsertest.cc
@@ -244,15 +244,15 @@ TEST_F(BrowserPluginTest, GuestCrash) {
       BrowserPluginHostMsg_HandleInputEvent::ID));
   browser_plugin_manager()->sink().ClearMessages();
 
-  const char* kAddEventListener =
+  const char* kAddCustomEventListener =
     "var msg;"
     "function crashListener() {"
     "  msg = 'crashed';"
     "}"
     "document.getElementById('browserplugin')."
-    "    addEventListener('crash', crashListener);";
+    "    addCustomEventListener('crash', crashListener);";
 
-  ExecuteJavaScript(kAddEventListener);
+  ExecuteJavaScript(kAddCustomEventListener);
 
   // Pretend that the guest has crashed
   browser_plugin->GuestCrashed();
@@ -283,21 +283,21 @@ TEST_F(BrowserPluginTest, RemovePlugin) {
 }
 
 TEST_F(BrowserPluginTest, CustomEvents) {
-  const char* kAddEventListener =
+  const char* kAddCustomEventListener =
     "var url;"
     "function nav(u) {"
     "  url = u;"
     "}"
     "document.getElementById('browserplugin')."
-    "    addEventListener('navigation', nav);";
-  const char* kRemoveEventListener =
+    "    addCustomEventListener('navigation', nav);";
+  const char* kRemoveCustomEventListener =
     "document.getElementById('browserplugin')."
-    "    removeEventListener('navigation', nav);";
+    "    removeCustomEventListener('navigation', nav);";
   const char* kGoogleURL = "http://www.google.com/";
   const char* kGoogleNewsURL = "http://news.google.com/";
 
   LoadHTML(GetHTMLForBrowserPluginObject().c_str());
-  ExecuteJavaScript(kAddEventListener);
+  ExecuteJavaScript(kAddCustomEventListener);
   // Grab the BrowserPlugin's instance ID from its resize message.
   const IPC::Message* msg =
       browser_plugin_manager()->sink().GetFirstMessageMatching(
@@ -316,11 +316,49 @@ TEST_F(BrowserPluginTest, CustomEvents) {
   browser_plugin->DidNavigate(GURL(kGoogleURL));
   EXPECT_EQ(kGoogleURL, ExecuteScriptAndReturnString("url"));
 
-  ExecuteJavaScript(kRemoveEventListener);
+  ExecuteJavaScript(kRemoveCustomEventListener);
   browser_plugin->DidNavigate(GURL(kGoogleNewsURL));
   // The URL variable should not change because we've removed the event
   // listener.
   EXPECT_EQ(kGoogleURL, ExecuteScriptAndReturnString("url"));
 }
 
+TEST_F(BrowserPluginTest, PostMessage) {
+  const char* kTesting = "testing123";
+  const char* kPostMessage =
+    "var msg;"
+    "function receiveMessage(event) {"
+    "  msg = event.data;"
+    "}"
+    "document.getElementById('browserplugin')."
+    "    addEventListener('message', receiveMessage, false);"
+    "document.getElementById('browserplugin')."
+    "    postMessage('testing123', '');";
+
+  LoadHTML(GetHTMLForBrowserPluginObject().c_str());
+  ExecuteJavaScript(kPostMessage);
+
+  const IPC::Message* msg =
+    browser_plugin_manager()->sink().GetUniqueMessageMatching(
+        BrowserPluginHostMsg_RouteMessageEvent::ID);
+  ASSERT_TRUE(msg);
+  int instance_id;
+  string16 data;
+  string16 target_origin;
+  PickleIterator iter(*msg);
+  ASSERT_TRUE(IPC::ReadParam(msg, &iter, &instance_id));
+  ASSERT_TRUE(IPC::ReadParam(msg, &iter, &data));
+  ASSERT_TRUE(IPC::ReadParam(msg, &iter, &target_origin));
+
+  MockBrowserPlugin* browser_plugin =
+      static_cast<MockBrowserPlugin*>(
+          browser_plugin_manager()->GetBrowserPlugin(instance_id));
+  ASSERT_TRUE(browser_plugin);
+
+  // Fire a message event in the embedder and verify that it fires.
+  browser_plugin->ReceiveMessage(MSG_ROUTING_NONE, string16(), data);
+  ProcessPendingMessages();
+  EXPECT_EQ(kTesting, ExecuteScriptAndReturnString("msg"));
+}
+
 }  // namespace content