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: I64520a55f8c09fe6215382ea361c539a9940cba5
diff --git a/media/libmedia/mediaplayer.cpp b/media/libmedia/mediaplayer.cpp
index bbbf4b6..ae527e8 100644
--- a/media/libmedia/mediaplayer.cpp
+++ b/media/libmedia/mediaplayer.cpp
@@ -221,12 +221,12 @@
 }
 
 status_t MediaPlayer::setVideoSurfaceTexture(
-        const sp<ISurfaceTexture>& surfaceTexture)
+        const sp<IGraphicBufferProducer>& bufferProducer)
 {
     ALOGV("setVideoSurfaceTexture");
     Mutex::Autolock _l(mLock);
     if (mPlayer == 0) return NO_INIT;
-    return mPlayer->setVideoSurfaceTexture(surfaceTexture);
+    return mPlayer->setVideoSurfaceTexture(bufferProducer);
 }
 
 // must call with lock held