Make the orientation of a texture accessible from and known by GrSurface.

R=robertphillips@google.com
Review URL: https://codereview.appspot.com/6801044

git-svn-id: http://skia.googlecode.com/svn/branches/gpu_dev@6148 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gl/GrGLTexture.cpp b/src/gpu/gl/GrGLTexture.cpp
index 0aa4884..c1821b2 100644
--- a/src/gpu/gl/GrGLTexture.cpp
+++ b/src/gpu/gl/GrGLTexture.cpp
@@ -26,10 +26,9 @@
                                      (GPUGL->glInterface(),
                                       textureDesc.fTextureID,
                                       textureDesc.fOwnsID));
-    fOrientation        = textureDesc.fOrientation;
-
+    
     if (NULL != rtDesc) {
-        // we render to the top left
+        GrAssert(kBottomLeft_Origin == textureDesc.fOrigin);
         GrGLIRect vp;
         vp.fLeft   = 0;
         vp.fWidth  = textureDesc.fWidth;
@@ -43,14 +42,14 @@
 
 GrGLTexture::GrGLTexture(GrGpuGL* gpu,
                          const Desc& textureDesc)
-    : INHERITED(gpu, textureDesc) {
+    : INHERITED(gpu, textureDesc, textureDesc.fOrigin) {
     this->init(gpu, textureDesc, NULL);
 }
 
 GrGLTexture::GrGLTexture(GrGpuGL* gpu,
                          const Desc& textureDesc,
                          const GrGLRenderTarget::Desc& rtDesc)
-    : INHERITED(gpu, textureDesc) {
+    : INHERITED(gpu, textureDesc, textureDesc.fOrigin) {
     this->init(gpu, textureDesc, &rtDesc);
 }