Unhide new SurfaceTexture & TextureView APIs

This change unhides the new SurfaceTexture and TextureView APIs that were added
to allow transferring ownership of the SurfaceTexture from the UI framework to
the application.

Change-Id: Ic4b781d907a59e99ff1a5974009305c1f9aee36a

Author: Jamie Gennis

api/current.txt

@@ -9003,6 +9003,8 @@ package android.graphics {
 
   public class SurfaceTexture {
     ctor public SurfaceTexture(int);
+    method public void attachToGLContext(int);
+    method public void detachFromGLContext();
     method public long getTimestamp();
     method public void getTransformMatrix(float[]);
     method public void release();
@@ -23289,6 +23291,7 @@ package android.view {
     method public android.graphics.Canvas lockCanvas(android.graphics.Rect);
     method protected final void onDraw(android.graphics.Canvas);
     method public void setOpaque(boolean);
+    method public void setSurfaceTexture(android.graphics.SurfaceTexture);
     method public void setSurfaceTextureListener(android.view.TextureView.SurfaceTextureListener);
     method public void setTransform(android.graphics.Matrix);
     method public void unlockCanvasAndPost(android.graphics.Canvas);

core/java/android/view/TextureView.java

@@ -676,7 +676,6 @@ public SurfaceTexture getSurfaceTexture() {
      *
      * @param surfaceTexture The {@link SurfaceTexture} that the view should use.
      * @see SurfaceTexture#detachFromGLContext()
-     * @hide
      */
     public void setSurfaceTexture(SurfaceTexture surfaceTexture) {
         if (surfaceTexture == null) {

graphics/java/android/graphics/SurfaceTexture.java

@@ -159,7 +159,7 @@ public void setDefaultBufferSize(int width, int height) {
      * It will implicitly bind its texture to the GL_TEXTURE_EXTERNAL_OES texture target.
      */
     public void updateTexImage() {
-        nativeUpdateTexImage(); 
+        nativeUpdateTexImage();
     }
 
     /**
@@ -172,8 +172,6 @@ public void updateTexImage() {
      * This can be used to access the SurfaceTexture image contents from multiple OpenGL ES
      * contexts.  Note, however, that the image contents are only accessible from one OpenGL ES
      * context at a time.
-     *
-     * @hide
      */
     public void detachFromGLContext() {
         int err = nativeDetachFromGLContext();
@@ -194,8 +192,6 @@ public void detachFromGLContext() {
      *
      * @param texName The name of the OpenGL ES texture that will be created.  This texture name
      * must be unusued in the OpenGL ES context that is current on the calling thread.
-     *
-     * @hide
      */
     public void attachToGLContext(int texName) {
         int err = nativeAttachToGLContext(texName);