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

src/image/SkImagePriv.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkImagePriv.h"
 #include "SkCanvas.h"
 #include "SkPicture.h"
@@ skipping 36 matching lines @@
                     return SkBitmap::kNo_Config;
                 case SkImage::kOpaque_AlphaType:
                     *isOpaque = true;
                     return SkBitmap::kARGB_8888_Config;
                 case SkImage::kPremul_AlphaType:
                     *isOpaque = false;
                     return SkBitmap::kARGB_8888_Config;
             }
             break;
     }
-    SkASSERT(!"how did we get here");
+    SkDEBUGFAIL("how did we get here");
     return SkBitmap::kNo_Config;
 }
 
 int SkImageBytesPerPixel(SkImage::ColorType ct) {
     static const uint8_t gColorTypeBytesPerPixel[] = {
         1,  // kAlpha_8_ColorType
         2,  // kRGB_565_ColorType
         4,  // kRGBA_8888_ColorType
         4,  // kBGRA_8888_ColorType
         4,  // kPMColor_ColorType
@@ skipping 96 matching lines @@
         canvas->save();
     }
     canvas->concat(matrix);
     if (!paint || !needs_layer(*paint)) {
         canvas->clipRect(tmpSrc);
     }
 
     canvas->drawPicture(*picture);
     canvas->restoreToCount(saveCount);
 }