Implement chrome.experimental.clipboard extension API.

chrome/test/data/extensions/api_test/clipboard/test.js

+// Clipboard API test for Chrome.
+// browser_tests.exe --gtest_filter=ExtensionApiTest.Clipboard
+
+const TEST_URL = "http://localhost:1337/files/extensions/test_file.html";
+
+function setupWindow(callback) {
+  chrome.tabs.getSelected(null, function(tab) {
+    chrome.tabs.update(tab.id, {"url": TEST_URL}, callback);
+  });
+}
+
+chrome.test.runTests([
+  function executeCopy() {
+    var onRequestCompleted = chrome.test.listenForever(
+      chrome.extension.onRequest,
+      function(request, sender, sendResponse) {
+        if (request == "start test") {
+          chrome.experimental.clipboard.executeCopy(
+            sender.tab.id,
+            chrome.test.callbackPass());
+        } else if (request == "copy event") {
+          onRequestCompleted();
+        } else {
+          chrome.test.fail("Unexpected request: " + JSON.stringify(request));
+        }
+      }
+    );
+    setupWindow();
+  },
+  function executeCut() {
+    var onRequestCompleted = chrome.test.listenForever(
+      chrome.extension.onRequest,
+      function(request, sender, sendResponse) {
+        if (request == "start test") {
+          chrome.experimental.clipboard.executeCut(
+            sender.tab.id,
+            chrome.test.callbackPass());
+        } else if (request == "cut event") {
+          onRequestCompleted();
+        } else {
+          chrome.test.fail("Unexpected request: " + JSON.stringify(request));
+        }
+      }
+    );
+    setupWindow();
+  },
+  function executePaste() {
+    var onRequestCompleted = chrome.test.listenForever(
+      chrome.extension.onRequest,
+      function(request, sender, sendResponse) {
+        if (request == "start test") {
+          chrome.experimental.clipboard.executePaste(
+            sender.tab.id,
+            chrome.test.callbackPass());
+        } else if (request == "paste event") {
+          onRequestCompleted();
+        } else {
+          chrome.test.fail("Unexpected request: " + JSON.stringify(request));
+        }
+      }
+    );
+    setupWindow();
+  }
+]);