Revert of Cleanup legacy NVPR-related definitions

src/gpu/GrContextFactory.cpp

Index: src/gpu/GrContextFactory.cpp
diff --git a/src/gpu/GrContextFactory.cpp b/src/gpu/GrContextFactory.cpp
index f62c6fe1d6e0daff7a80018879106d440a71685a..7df19177eba177ad5899b759e15217e07fca5c70 100755
--- a/src/gpu/GrContextFactory.cpp
+++ b/src/gpu/GrContextFactory.cpp
@@ -17,7 +17,7 @@
 #endif
 #include "gl/SkGLContext.h"
 #include "gl/SkNullGLContext.h"
-#include "GrCaps.h"
+
 
 GrContext* GrContextFactory::get(GLContextType type, GrGLStandard forcedGpuAPI) {
     for (int i = 0; i < fContexts.count(); ++i) {
@@ -60,9 +60,13 @@
 
     SkASSERT(glCtx->isValid());
 
-    // Block NVPR from non-NVPR types.
+    // Ensure NVPR is available for the NVPR type and block it from other types.
     SkAutoTUnref<const GrGLInterface> glInterface(SkRef(glCtx->gl()));
-    if (kNVPR_GLContextType != type) {
+    if (kNVPR_GLContextType == type) {
+        if (!glInterface->hasExtension("GL_NV_path_rendering")) {
+            return NULL;
+        }
+    } else {
         glInterface.reset(GrGLInterfaceRemoveNVPR(glInterface));
         if (!glInterface) {
             return NULL;
@@ -75,13 +79,6 @@
     if (!grCtx.get()) {
         return NULL;
     }
-    // Ensure path rendering support is available for the NVPR type
-    if (kNVPR_GLContextType == type) {
-        if (!grCtx->caps()->shaderCaps()->pathRenderingSupport()) {
-            return NULL;
-        }
-    }
-
     GPUContext& ctx = fContexts.push_back();
     ctx.fGLContext = glCtx.get();
     ctx.fGLContext->ref();