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

src/core/SkPictureRecord.cpp

Index: src/core/SkPictureRecord.cpp
diff --git a/src/core/SkPictureRecord.cpp b/src/core/SkPictureRecord.cpp
index 0ec9eaf74d0c812b01bea81893d39ff61fb94d80..309b8a883fbc3c71c37cc9e01acdaff4d07ec394 100644
--- a/src/core/SkPictureRecord.cpp
+++ b/src/core/SkPictureRecord.cpp
@@ -139,7 +139,7 @@ static inline uint32_t getPaintOffset(DrawType op, uint32_t opSize) {
 }
 
 SkDevice* SkPictureRecord::setDevice(SkDevice* device) {
-    SkASSERT(!"eeek, don't try to change the device on a recording canvas");
+    SkDEBUGFAIL("eeek, don't try to change the device on a recording canvas");
     return this->INHERITED::setDevice(device);
 }