Add SkDEBUGFAIL to clean up use of SkASSERT(!"text");
catch a couple of latent SkASSERT("text") bugs.

http://codereview.appspot.com/5504090/



git-svn-id: http://skia.googlecode.com/svn/trunk@2926 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/core/SkAAClip.cpp b/src/core/SkAAClip.cpp
index 39eadbf..096fd6b 100644
--- a/src/core/SkAAClip.cpp
+++ b/src/core/SkAAClip.cpp
@@ -1335,7 +1335,7 @@
         case SkRegion::kXOR_Op:
             return xorAlphaProc;
         default:
-            SkASSERT(!"unexpected region op");
+            SkDEBUGFAIL("unexpected region op");
             return sectAlphaProc;
     }
 }
@@ -1608,7 +1608,7 @@
             break;
 
         default:
-            SkASSERT(!"unknown region op");
+            SkDEBUGFAIL("unknown region op");
             return !this->isEmpty();
     }
 
@@ -1996,7 +1996,7 @@
 static MergeAAProc find_merge_aa_proc(SkMask::Format format) {
     switch (format) {
         case SkMask::kBW_Format:
-            SkASSERT(!"unsupported");
+            SkDEBUGFAIL("unsupported");
             return NULL;
         case SkMask::kA8_Format:
         case SkMask::k3D_Format: {
@@ -2012,7 +2012,7 @@
             return (MergeAAProc)proc32;
         }
         default:
-            SkASSERT(!"unsupported");
+            SkDEBUGFAIL("unsupported");
             return NULL;
     }
 }