Implement Android WebView.clearCache

android_webview/javatests/src/org/chromium/android_webview/test/AwContentsTest.java

Index: android_webview/javatests/src/org/chromium/android_webview/test/AwContentsTest.java
diff --git a/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsTest.java b/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsTest.java
index f7545f986d3a734d125b488fa28fc0e5a3e501b7..98defe5b9e44e879dbe16bd62941f53a58b369cb 100644
--- a/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsTest.java
+++ b/android_webview/javatests/src/org/chromium/android_webview/test/AwContentsTest.java
@@ -12,6 +12,7 @@ import android.test.suitebuilder.annotation.SmallTest;
 
 import org.chromium.android_webview.AwContents;
 import org.chromium.base.test.util.Feature;
+import org.chromium.base.test.util.UrlUtils;
 import org.chromium.content.browser.test.util.CallbackHelper;
 
 import java.util.concurrent.Semaphore;
@@ -78,4 +79,21 @@ public class AwContentsTest extends AndroidWebViewTestBase {
         result = callDocumentHasImagesSync(awContents);
         assertEquals(1, result);
     }
+
+    public void testClearCache() throws Throwable {
+        // TODO(boliu): Implement actual test.
+        final AwTestContainerView testView = createAwTestContainerViewOnMainSync(mContentsClient);
+        final AwContents awContents = testView.getAwContents();
+        loadUrlSync(
+                awContents.getContentViewCore(),
+                mContentsClient.getOnPageFinishedHelper(),
+                UrlUtils.getTestFileUrl("webview/hello_world.html"));
+
+        runTestOnUiThread(new Runnable() {
+            @Override
+            public void run() {
+              awContents.clearCache();
+            }
+        });
+    }
 }