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/Layer.cpp b/libs/hwui/Layer.cpp
index 9606e58..de2fcf4 100644
--- a/libs/hwui/Layer.cpp
+++ b/libs/hwui/Layer.cpp
@@ -214,7 +214,7 @@
     DeferStateStruct deferredState(*deferredList, *renderer,
             RenderNode::kReplayFlag_ClipChildren);
 
-    renderer->initViewport(width, height);
+    renderer->initializeViewport(width, height);
     renderer->setupFrameState(dirtyRect.left, dirtyRect.top,
             dirtyRect.right, dirtyRect.bottom, !isBlend());