Combine projection matrix, and viewport management

Merge management of ortho projection matrix with the viewport size,
since they should always be changed together.

Change-Id: Iccb8f30828f4fb7848999ac54852e7ed2d6f2eb1
diff --git a/libs/hwui/LayerRenderer.cpp b/libs/hwui/LayerRenderer.cpp
index e0ac2ba..c82197c 100644
--- a/libs/hwui/LayerRenderer.cpp
+++ b/libs/hwui/LayerRenderer.cpp
@@ -40,7 +40,7 @@
 }
 
 void LayerRenderer::setViewport(int width, int height) {
-    initViewport(width, height);
+    initializeViewport(width, height);
 }
 
 status_t LayerRenderer::prepareDirty(float left, float top, float right, float bottom,