Clean up physical coupling

Narrow the use of #include directives in hwui, replacing with forward
declarations where straightforward. Speeds compiles; doesn't do any
restructuring of code.

Change-Id: Icac2baffb5896f55d8c6718e9bd9d4bfa02d3ca0
diff --git a/libs/hwui/Patch.h b/libs/hwui/Patch.h
index 1ba045d..d5bbfa6 100644
--- a/libs/hwui/Patch.h
+++ b/libs/hwui/Patch.h
@@ -27,11 +27,12 @@
 
 #include "Rect.h"
 #include "UvMapper.h"
-#include "Vertex.h"
 
 namespace android {
 namespace uirenderer {
 
+class TextureVertex;
+
 ///////////////////////////////////////////////////////////////////////////////
 // 9-patch structures
 ///////////////////////////////////////////////////////////////////////////////