Add sk_calloc. Remove SkMemory_stdlib, which seems unused.

I'm seeing basically no difference between malloc + bzero and calloc on my desktop, but on a Galaxy Nexus calloc is never slower, and significantly faster once the allocation size becomes large, both for allocation and for _reading_.

BUG=skia:1662
R=reed@google.com

Review URL: https://codereview.chromium.org/24251008

git-svn-id: http://skia.googlecode.com/svn/trunk@11414 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 8 insertions, 0 deletions

diff --git a/src/ports/SkMemory_mozalloc.cpp b/src/ports/SkMemory_mozalloc.cpp
index 2c049b2a03..4ca9312671 100644
--- a/src/ports/SkMemory_mozalloc.cpp
+++ b/src/ports/SkMemory_mozalloc.cpp
@@ -37,3 +37,11 @@ void sk_free(void* p) {
 void* sk_malloc_flags(size_t size, unsigned flags) {
     return (flags & SK_MALLOC_THROW) ? moz_xmalloc(size) : moz_malloc(size);
 }
+
+void* sk_calloc(size_t size) {
+    return moz_calloc(size, 1);
+}
+
+void* sk_calloc_throw(size_t size) {
+    return moz_xcalloc(size, 1);
+}