Enable DOM paste for extensions with clipboard access.

BUG=none
TEST=browser_tests.exe --gtest_filter=ExtensionApiTest.Clipboard

Review URL: http://codereview.chromium.org/1121004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@42264 0039d316-1c4b-4281-b951-d872f2087c98

2 files changed, 8 insertions, 0 deletions

diff --git a/chrome/browser/extensions/extension_host.cc b/chrome/browser/extensions/extension_host.cc
index 2470969..350c370 100644
--- a/chrome/browser/extensions/extension_host.cc
+++ b/chrome/browser/extensions/extension_host.cc
@@ -505,6 +505,10 @@ WebPreferences ExtensionHost::GetWebkitPrefs() {
   if (extension_host_type_ == ViewType::EXTENSION_POPUP ||
       extension_host_type_ == ViewType::EXTENSION_INFOBAR)
     webkit_prefs.allow_scripts_to_close_windows = true;
+
+  // TODO(dcheng): check kClipboardPermission instead once it's implemented.
+  if (extension_->HasApiPermission(Extension::kExperimentalPermission))
+    webkit_prefs.dom_paste_enabled = true;
   return webkit_prefs;
 }
 
diff --git a/chrome/test/data/extensions/api_test/clipboard/test.js b/chrome/test/data/extensions/api_test/clipboard/test.js
index 52f013d..8a50a6f 100644
--- a/chrome/test/data/extensions/api_test/clipboard/test.js
+++ b/chrome/test/data/extensions/api_test/clipboard/test.js
@@ -60,5 +60,9 @@ chrome.test.runTests([
       }
     );
     setupWindow();
+  },
+  function domPaste() {
+    document.body.addEventListener('paste', chrome.test.callbackPass());
+    document.execCommand('paste');
   }
 ]);