add realloc method to SkAutoSTMalloc

include/core/SkTemplates.h

Index: include/core/SkTemplates.h
diff --git a/include/core/SkTemplates.h b/include/core/SkTemplates.h
index b18556b4524b8bb713b25747ff51929a97a8998e..b087a5a9c9cae949cf179f4b9eccf434bef8add5 100644
--- a/include/core/SkTemplates.h
+++ b/include/core/SkTemplates.h
@@ -437,7 +437,7 @@ public:
             sk_free(fPtr);
         }
         if (count > N) {
-            fPtr = (T*)sk_malloc_flags(count * sizeof(T), SK_MALLOC_THROW | SK_MALLOC_TEMP);
+            fPtr = (T*)sk_malloc_throw(count * sizeof(T));
         } else if (count) {
             fPtr = fTStorage;
         } else {
@@ -464,6 +464,22 @@ public:
         return fPtr[index];
     }
 
+    // Reallocs the array, can be used to shrink the allocation.  Makes no attempt to be intelligent
+    void realloc(size_t count) {
+        if (count > N) {
+            if (fPtr == fTStorage) {
+                fPtr = (T*)sk_malloc_throw(count * sizeof(T));
+                memcpy(fPtr, fTStorage, N * sizeof(T));
+            } else {
+                fPtr = (T*)sk_realloc_throw(fPtr, count * sizeof(T));
+            }
+        } else if (!fPtr) {
+            fPtr = fTStorage;
+        } else if (fPtr != fTStorage) {
+            fPtr = (T*)sk_realloc_throw(fPtr, count * sizeof(T));
+        }
+    }
+
 private:
     T*          fPtr;
     union {