Rename ISurfaceTexture and SurfaceTexture

The C++ class names don't match what the classes do, so rename
ISurfaceTexture to IGraphicBufferProducer, and SurfaceTexture to
GLConsumer.

Bug 7736700

Change-Id: Ia03e468888025b5cae3c0ee1995434515dbea387
diff --git a/include/gui/ISurfaceComposer.h b/include/gui/ISurfaceComposer.h
index 6500ad5..50b2ad1 100644
--- a/include/gui/ISurfaceComposer.h
+++ b/include/gui/ISurfaceComposer.h
@@ -86,10 +86,10 @@
      */
     virtual void bootFinished() = 0;
 
-    /* verify that an ISurfaceTexture was created by SurfaceFlinger.
+    /* verify that an IGraphicBufferProducer was created by SurfaceFlinger.
      */
     virtual bool authenticateSurfaceTexture(
-            const sp<ISurfaceTexture>& surface) const = 0;
+            const sp<IGraphicBufferProducer>& surface) const = 0;
 
     /* Capture the specified screen. requires READ_FRAME_BUFFER permission
      * This function will fail if there is a secure window on screen.