use the supplied matrix instead of the texture w/h div for the bicubic GPU effect

BUG=
R=bsalomon@google.com, caryclark@google.com

Author: humper@google.com

Review URL: https://codereview.chromium.org/37003005

git-svn-id: http://skia.googlecode.com/svn/trunk/src@11921 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/effects/GrBicubicEffect.cpp b/gpu/effects/GrBicubicEffect.cpp
index 25a1591..568311b 100644
--- a/gpu/effects/GrBicubicEffect.cpp
+++ b/gpu/effects/GrBicubicEffect.cpp
@@ -116,7 +116,7 @@
                                  const SkMatrix &matrix,
                                  const GrTextureParams &params,
                                  GrCoordSet coordSet)
-  : INHERITED(texture, MakeDivByTextureWHMatrix(texture), params, coordSet) {
+  : INHERITED(texture, matrix, params, coordSet) {
     for (int y = 0; y < 4; y++) {
         for (int x = 0; x < 4; x++) {
             // Convert from row-major scalars to column-major floats.