Implements layoutTestController.overridePreference()

This change provides the infrastructure for
layoutTestController.overridePreference(). Currently, we only provide an
implementation for the preference 'WebKitOfflineWebApplicationCacheEnabled',
which is required by the layout test http/tests/appcache/disabled.html.

Change-Id: I8552f2f4e23b982db2d067ffa20c052e56d8fb7f

1 files changed, 13 insertions, 0 deletions

diff --git a/tests/DumpRenderTree/src/com/android/dumprendertree/TestShellActivity.java b/tests/DumpRenderTree/src/com/android/dumprendertree/TestShellActivity.java
index 02a7046313db..24f58b228486 100644
--- a/tests/DumpRenderTree/src/com/android/dumprendertree/TestShellActivity.java
+++ b/tests/DumpRenderTree/src/com/android/dumprendertree/TestShellActivity.java
@@ -61,6 +61,9 @@ public class TestShellActivity extends Activity implements LayoutTestController
 
     static enum DumpDataType {DUMP_AS_TEXT, EXT_REPR, NO_OP}
 
+    // String constants for use with layoutTestController.overridePreferences
+    private final String WEBKIT_OFFLINE_WEB_APPLICATION_CACHE_ENABLED = "WebKitOfflineWebApplicationCacheEnabled";
+
     public class AsyncHandler extends Handler {
         @Override
         public void handleMessage(Message msg) {
@@ -459,6 +462,16 @@ public class TestShellActivity extends Activity implements LayoutTestController
         mGeolocationPermission = allow;
     }
 
+    public void overridePreference(String key, boolean value) {
+        // TODO: We should look up the correct WebView for the frame which
+        // called the layoutTestController method. Currently, we just use the
+        // WebView for the main frame. EventSender suffers from the same
+        // problem.
+        if (key.equals(WEBKIT_OFFLINE_WEB_APPLICATION_CACHE_ENABLED)) {
+            mWebView.getSettings().setAppCacheEnabled(value);
+        }
+    }
+
     private final WebViewClient mViewClient = new WebViewClient(){
         @Override
         public void onPageFinished(WebView view, String url) {