upstream SurfaceTextureListener and SurfaceTextureBridge class for android

content/public/android/java/src/org/chromium/content/common/SurfaceTextureListener.java

Index: content/public/android/java/src/org/chromium/content/common/SurfaceTextureListener.java
diff --git a/content/public/android/java/src/org/chromium/content/common/SurfaceTextureListener.java b/content/public/android/java/src/org/chromium/content/common/SurfaceTextureListener.java
new file mode 100644
index 0000000000000000000000000000000000000000..d6ed16fc23515c1f32303342e15c3742716a7257
--- /dev/null
+++ b/content/public/android/java/src/org/chromium/content/common/SurfaceTextureListener.java
@@ -0,0 +1,46 @@
+// 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.content.common;
+
+import android.graphics.SurfaceTexture;
+
+import org.chromium.base.CalledByNative;
+import org.chromium.base.JNINamespace;
+
+/**
+ * Listener to an android SurfaceTexture object for frame availability.
+ */
+@JNINamespace("content")
+class SurfaceTextureListener implements SurfaceTexture.OnFrameAvailableListener {
+    // Used to determine the class instance to dispatch the native call to.
+    private int mNativeSurfaceTextureListener = 0;
+
+    private SurfaceTextureListener(int nativeSurfaceTextureListener) {
+        assert nativeSurfaceTextureListener != 0;
+        mNativeSurfaceTextureListener = nativeSurfaceTextureListener;
+    }
+
+    @Override
+    public void onFrameAvailable(SurfaceTexture surfaceTexture) {
+        nativeFrameAvailable(mNativeSurfaceTextureListener);
+    }
+
+    @Override
+    protected void finalize() throws Throwable {
+        try {
+            nativeDestroy(mNativeSurfaceTextureListener);
+        } finally {
+            super.finalize();
+        }
+    }
+
+    @CalledByNative
+    private static SurfaceTextureListener create(int nativeSurfaceTextureListener) {
+        return new SurfaceTextureListener(nativeSurfaceTextureListener);
+    }
+
+    private native void nativeFrameAvailable(int nativeSurfaceTextureListener);
+    private native void nativeDestroy(int nativeSurfaceTextureListener);
+}