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: I7fc8474c1d0d95658609b69cdb0af412d69a42c4
diff --git a/tests/camera2/camera2.cpp b/tests/camera2/camera2.cpp
index a15c5e6..75ec73f 100644
--- a/tests/camera2/camera2.cpp
+++ b/tests/camera2/camera2.cpp
@@ -214,7 +214,7 @@
 
     }
 
-    void setUpStream(sp<ISurfaceTexture> consumer,
+    void setUpStream(sp<IGraphicBufferProducer> consumer,
             int width, int height, int format, int *id) {
         status_t res;