Add ContentViewDelegate

chrome/android/java/src/org/chromium/chrome/browser/ContentViewDelegate.java

Index: chrome/android/java/src/org/chromium/chrome/browser/ContentViewDelegate.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ContentViewDelegate.java b/chrome/android/java/src/org/chromium/chrome/browser/ContentViewDelegate.java
new file mode 100644
index 0000000000000000000000000000000000000000..d7fc0130d16a2713948057857d1649df664d02ea
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ContentViewDelegate.java
@@ -0,0 +1,42 @@
+// Copyright (c) 2012 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.
+
+package org.chromium.chrome.browser;
+
+import org.chromium.base.CalledByNative;
+
+import java.util.concurrent.atomic.AtomicReference;
+
+/**
+ * Delegate that lets the chrome/ layer talk to the ContentView embedder.
+ */
+public class ContentViewDelegate {
+    public interface ContentViewDelegateImpl {
+        boolean shouldOverrideUrlLoading(String url);
+    }
+    private AtomicReference<ContentViewDelegateImpl> mImpl =
+            new AtomicReference<ContentViewDelegateImpl>();
+
+    public ContentViewDelegate(int nativeWebContents, ContentViewDelegateImpl impl) {
+        mImpl.set(impl);
+        nativeInit(nativeWebContents);
+    }
+
+    @CalledByNative
+    private boolean shouldOverrideUrlLoading(String url) {
+        ContentViewDelegateImpl impl = mImpl.get();
+        if (impl == null) {
+            return false;
+        } else {
+            return impl.shouldOverrideUrlLoading(url);
+        }
+    }
+
+    @CalledByNative
+    private void onWebContentsDestroyed() {
+        mImpl.set(null);
+    }
+
+    private native void nativeInit(int webContents);
+}