Replace uses of GrAssert by SkASSERT.

R=bsalomon@google.com

Review URL: https://codereview.chromium.org/22850006

git-svn-id: http://skia.googlecode.com/svn/trunk@10789 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrGpu.h b/src/gpu/GrGpu.h
index 86c25ee..2b3608d 100644
--- a/src/gpu/GrGpu.h
+++ b/src/gpu/GrGpu.h
@@ -295,7 +295,7 @@
      * Can the provided configuration act as a color render target?
      */
     bool isConfigRenderable(GrPixelConfig config) const {
-        GrAssert(kGrPixelConfigCnt > config);
+        SkASSERT(kGrPixelConfigCnt > config);
         return fConfigRenderSupport[config];
     }