Guard against most unintentionally ephemeral SkAutoFoo instantiations.

src/core/SkString.cpp

Index: src/core/SkString.cpp
diff --git a/src/core/SkString.cpp b/src/core/SkString.cpp
index 4e5e204e8c0c3369f3cbe59ef9ae6c77c45ee4cc..7b3c265314f9d5048163261a683af8f86d6cd23f 100644
--- a/src/core/SkString.cpp
+++ b/src/core/SkString.cpp
@@ -626,27 +626,6 @@ void SkString::swap(SkString& other) {
 
 ///////////////////////////////////////////////////////////////////////////////
 
-SkAutoUCS2::SkAutoUCS2(const char utf8[]) {
-    size_t len = strlen(utf8);
-    fUCS2 = (uint16_t*)sk_malloc_throw((len + 1) * sizeof(uint16_t));
-
-    uint16_t* dst = fUCS2;
-    for (;;) {
-        SkUnichar uni = SkUTF8_NextUnichar(&utf8);
-        *dst++ = SkToU16(uni);
-        if (uni == 0) {
-            break;
-        }
-    }
-    fCount = (int)(dst - fUCS2);
-}
-
-SkAutoUCS2::~SkAutoUCS2() {
-    sk_free(fUCS2);
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
 SkString SkStringPrintf(const char* format, ...) {
     SkString formattedOutput;
     char buffer[kBufferSize];