Respect the clipboardRead and clipboardWrite permissions in content scripts.

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

 // Copyright (c) 2011 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.
 
 // Clipboard permission test for Chrome.
 // browser_tests.exe --gtest_filter=ClipboardApiTest.ExtensionNoPermission
 
-chrome.test.runTests([
-  function domCopy() {
-    if (document.execCommand('copy'))
-      chrome.test.succeed();
-    else
-      chrome.test.fail('execCommand("copy") failed');
-  },
-  function domPaste() {
-    if (!document.execCommand('paste'))
-      chrome.test.succeed();
-    else
-      chrome.test.fail('execCommand("paste") succeeded');
-  },
-  function copyInIframe() {
-    var ifr = document.createElement('iframe');
-    document.body.appendChild(ifr);
-    window.command = 'copy';
-    ifr.contentDocument.write('<script src="iframe.js"></script>');
-  },
-  function pasteInIframe() {
-    var ifr = document.createElement('iframe');
-    document.body.appendChild(ifr);
-    window.command = 'paste';
-    ifr.contentDocument.write('<script src="iframe.js"></script>');
-  }
-]);
+// TODO(kalman): Consolidate this test script with the other clipboard tests.
+
+var pass = chrome.test.callbackPass;
+
+function testDomCopy() {
+  if (document.execCommand('copy'))
+    chrome.test.succeed();
+  else
+    chrome.test.fail('execCommand("copy") failed');
+}
+
+function testDomPaste() {
+  if (document.execCommand('paste'))
+    chrome.test.fail('execCommand("paste") succeeded');
+  else
+    chrome.test.succeed();
+}
+
+function testCopyInIframe() {
+  var ifr = document.createElement('iframe');
+  document.body.appendChild(ifr);
+  window.command = 'copy';
+  ifr.contentDocument.write('<script src="iframe.js"></script>');
+}
+
+function testPasteInIframe() {
+  var ifr = document.createElement('iframe');
+  document.body.appendChild(ifr);
+  window.command = 'paste';
+  ifr.contentDocument.write('<script src="iframe.js"></script>');
+}
 
 function testDone(result) {
   // 'copy' should always succeed regardless of the clipboardWrite permission,
   // for backwards compatibility. 'paste' should always fail because the
   // extension doesn't have clipboardRead.
   var expected = window.command === 'copy';
   if (result === expected)
     chrome.test.succeed();
   else
     chrome.test.fail();
 }
+
+function testContentScriptCopyPaste(tabUrl) {
+  function runContentScript(tabId) {
+    var done = chrome.test.listenForever(chrome.runtime.onMessage,
+                                         function(message, sender) {
+      if (sender.tab.id == tabId) {
+        chrome.tabs.remove(sender.tab.id);
+        chrome.test.assertEq('', message);
+        done();
+        chrome.test.succeed();
+      }
+    });
+    chrome.tabs.executeScript(tabId, {file: 'content_script.js'});
+  }
+
+  chrome.tabs.create({url: tabUrl}, pass(function(newTab) {
+    var done = chrome.test.listenForever(chrome.tabs.onUpdated,
+                                         function(_, info, updatedTab) {
+      if (updatedTab.id == newTab.id && info.status == 'complete') {
+        runContentScript(newTab.id);
+        done();
+      }
+    });
+  }));
+}
+
+chrome.test.getConfig(function(config) {
+  var tabUrl = 'http://localhost:' + config.testServer.port +
+               '/extensions/test_file.html';
+  chrome.test.runTests([
+    testDomCopy,
+    testDomPaste,
+    testCopyInIframe,
+    testPasteInIframe,
+    testContentScriptCopyPaste.bind(null, tabUrl)
+  ]);
+});