My clang now doesn't complain about !"foo".

src/gpu/gl/GrGpuGL.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGpuGL.h"
 #include "GrGLStencilBuffer.h"
@@ skipping 873 matching lines @@
         GL_CALL(DeleteFramebuffers(1, &desc->fRTFBOID));
     }
     if (desc->fTexFBOID) {
         GL_CALL(DeleteFramebuffers(1, &desc->fTexFBOID));
     }
     return false;
 }
 
 // good to set a break-point here to know when createTexture fails
 static GrTexture* return_null_texture() {
-//    SkASSERT(!"null texture");
+//    SkDEBUGFAIL("null texture");
     return NULL;
 }
 
 #if 0 && GR_DEBUG
 static size_t as_size_t(int x) {
     return x;
 }
 #endif
 
 GrTexture* GrGpuGL::onCreateTexture(const GrTextureDesc& desc,
@@ skipping 1654 matching lines @@
             this->setVertexArrayID(gpu, 0);
         }
         int attrCount = gpu->glCaps().maxVertexAttributes();
         if (fDefaultVertexArrayAttribState.count() != attrCount) {
             fDefaultVertexArrayAttribState.resize(attrCount);
         }
         attribState = &fDefaultVertexArrayAttribState;
     }
     return attribState;
 }