Make GrMatrix an alias of SkMatrix. Add new methods to SkMatrix.

Review URL: http://codereview.appspot.com/4538043/

Checked in on behalf of reed@ with some additional work (remove the do-nother sk->gr matrix converter).



git-svn-id: http://skia.googlecode.com/svn/trunk@1289 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrMatrix.cpp b/gpu/src/GrMatrix.cpp
index c88c6e1..476d9a2 100644
--- a/gpu/src/GrMatrix.cpp
+++ b/gpu/src/GrMatrix.cpp
@@ -19,6 +19,7 @@
 #include "GrRect.h"
 #include <stddef.h>
 
+#if 0
 #if GR_SCALAR_IS_FLOAT
     const GrScalar GrMatrix::gRESCALE(GR_Scalar1);
 #else
@@ -688,6 +689,7 @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////
+#endif
 
 int Gr_clz(uint32_t n) {
     if (0 == n) {
@@ -716,4 +718,3 @@
     }
     return count;
 }
-