Add MSAA configs to bench.
Review URL: https://codereview.chromium.org/12607013

git-svn-id: http://skia.googlecode.com/svn/trunk@8217 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
index 271923a..b719ec5 100644
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -549,6 +549,10 @@
     return fGpu->getCaps().maxRenderTargetSize();
 }
 
+int GrContext::getMaxSampleCount() const {
+    return fGpu->getCaps().maxSampleCount();
+}
+
 ///////////////////////////////////////////////////////////////////////////////
 
 GrTexture* GrContext::wrapBackendTexture(const GrBackendTextureDesc& desc) {