Fix AllocedProxyTest on Mesa

tests/ProxyTest.cpp

 /*
  * Copyright 2016 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 // This is a GPU-backend specific test.
 
 #include "Test.h"
@@ skipping 67 matching lines @@
 DEF_GPUTEST_FOR_GL_RENDERING_CONTEXTS(AllocedProxyTest, reporter, ctxInfo) {
     GrTextureProvider* provider = ctxInfo.fGrContext->textureProvider();
 
     for (auto origin : { kBottomLeft_GrSurfaceOrigin, kTopLeft_GrSurfaceOrigin }) {
         for (auto widthHeight : { 100, 128 }) {
             for (auto config : { kAlpha_8_GrPixelConfig, kRGBA_8888_GrPixelConfig }) {
                 for (auto fit : { SkBackingFit::kExact, SkBackingFit::kApprox }) {
                     for (auto budgeted : { SkBudgeted::kYes, SkBudgeted::kNo }) {
                         for (auto numSamples : { 0, 4}) {
                             bool renderable = ctxInfo.fGrContext->caps()->isConfigRenderable(
-                                                                      config, numSamples > 0);
+                                                                      config, numSamples > 0) &&
+                                  numSamples <= ctxInfo.fGrContext->caps()->maxColorSampleCount();
 
                             GrSurfaceDesc desc;
                             desc.fOrigin = origin;
                             desc.fWidth = widthHeight;
                             desc.fHeight = widthHeight;
                             desc.fConfig = config;
                             desc.fSampleCnt = numSamples;
 
                             if (renderable) {
                                 sk_sp<GrRenderTargetProxy> rtProxy(GrRenderTargetProxy::Make(
@@ skipping 64 matching lines @@
                     check_surface(reporter, texProxy.get(), origin,
                                   kWidthHeight, kWidthHeight, config);
                     check_texture(reporter, provider, texProxy.get(), SkBackingFit::kExact);
                 }
             }
         }
     }
 }
 
 #endif