Remove GrContext.h dependence on GrGpu.h

Review URL:  http://codereview.appspot.com/4433096/



git-svn-id: http://skia.googlecode.com/svn/trunk@1227 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/samplecode/SampleApp.cpp b/samplecode/SampleApp.cpp
index bd87d83..113a8ed 100644
--- a/samplecode/SampleApp.cpp
+++ b/samplecode/SampleApp.cpp
@@ -378,9 +378,9 @@
 
         if (NULL == fGrContext) {
         #if defined(SK_USE_SHADERS)
-            fGrContext = GrContext::Create(GrGpu::kOpenGL_Shaders_Engine, NULL);
+            fGrContext = GrContext::Create(kOpenGL_Shaders_GrEngine, NULL);
         #else
-            fGrContext = GrContext::Create(GrGpu::kOpenGL_Fixed_Engine, NULL);
+            fGrContext = GrContext::Create(kOpenGL_Fixed_GrEngine, NULL);
         #endif
             SkDebugf("---- constructor\n");
         }