Implement text rendering with NVPR

src/gpu/GrContext.cpp

Index: src/gpu/GrContext.cpp
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
old mode 100644
new mode 100755
index 6c90c178d3ef6553df7aba35dd9820721f179fc4..d59d2e8d40bffedcfb688997a067f4daf476a5fc
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -16,6 +16,7 @@
 #include "GrAARectRenderer.h"
 #include "GrBufferAllocPool.h"
 #include "GrGpu.h"
+#include "GrDistanceFieldTextContext.h"
 #include "GrDrawTargetCaps.h"
 #include "GrIndexBuffer.h"
 #include "GrInOrderDrawBuffer.h"
@@ -26,6 +27,7 @@
 #include "GrResourceCache.h"
 #include "GrSoftwarePathRenderer.h"
 #include "GrStencilBuffer.h"
+#include "GrStencilAndCoverTextContext.h"
 #include "GrStrokeInfo.h"
 #include "GrTextStrike.h"
 #include "GrTraceMarker.h"
@@ -236,6 +238,19 @@ void GrContext::getResourceCacheUsage(int* resourceCount, size_t* resourceBytes)
   }
 }
 
+GrTextContext* GrContext::createTextContext(GrRenderTarget* renderTarget,
+                                            const SkDeviceProperties&
+                                            leakyProperties,
+                                            bool enableDistanceFieldFonts) {
+    if (fGpu->caps()->pathRenderingSupport()) {
+        if (renderTarget->getStencilBuffer() && renderTarget->isMultisampled()) {
+            return SkNEW_ARGS(GrStencilAndCoverTextContext, (this, leakyProperties));
+        }
+    }
+    return SkNEW_ARGS(GrDistanceFieldTextContext, (this, leakyProperties,
+                                                   enableDistanceFieldFonts));
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 
 GrTexture* GrContext::findAndRefTexture(const GrTextureDesc& desc,