Add direct getter for GrCaps to GrContext.

src/gpu/GrBlurUtils.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrBlurUtils.h"
 #include "GrDrawContext.h"
+#include "GrCaps.h"
 #include "GrContext.h"
 #include "effects/GrSimpleTextureEffect.h"
 #include "GrStrokeInfo.h"
 #include "GrTexture.h"
 #include "GrTextureProvider.h"
 #include "SkDraw.h"
 #include "SkGr.h"
 #include "SkMaskFilter.h"
 #include "SkPaint.h"
 
@@ skipping 83 matching lines @@
                                   int sampleCnt) {
     GrSurfaceDesc desc;
     desc.fFlags = kRenderTarget_GrSurfaceFlag;
     desc.fWidth = SkScalarCeilToInt(maskRect.width());
     desc.fHeight = SkScalarCeilToInt(maskRect.height());
     desc.fSampleCnt = doAA ? sampleCnt : 0;
     // We actually only need A8, but it often isn't supported as a
     // render target so default to RGBA_8888
     desc.fConfig = kRGBA_8888_GrPixelConfig;
 
-    if (context->isConfigRenderable(kAlpha_8_GrPixelConfig, desc.fSampleCnt > 0)) {
+    if (context->caps()->isConfigRenderable(kAlpha_8_GrPixelConfig, desc.fSampleCnt > 0)) {
         desc.fConfig = kAlpha_8_GrPixelConfig;
     }
 
     GrTexture* mask = context->textureProvider()->refScratchTexture(
         desc, GrTextureProvider::kApprox_ScratchTexMatch);
     if (NULL == mask) {
         return NULL;
     }
 
     SkRect clipRect = SkRect::MakeWH(maskRect.width(), maskRect.height());
@@ skipping 162 matching lines @@
                                                               SkPaint::kFill_Style;
         draw_with_mask_filter(drawContext, context->textureProvider(), renderTarget,
                               clip, viewMatrix, *devPathPtr,
                               paint.getMaskFilter(), clipBounds, &grPaint, style);
         return;
     }
 
     drawContext->drawPath(renderTarget, clip, grPaint, viewMatrix, *pathPtr, strokeInfo);
 }