Remove old iOS porting files.

src/utils/ios/SkOSFile_iOS.mm

-/*
- * Copyright 2010 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include <Foundation/Foundation.h>
-#include "SkOSFile.h"
-#include "SkString.h"
-
-struct SkFILE {
-    NSData* fData;
-    size_t  fOffset;
-    size_t  fLength;
-};
-
-SkFILE* sk_fopen(const char cpath[], SkFILE_Flags flags) {
-    if (flags & kWrite_SkFILE_Flag) {
-        return NULL;
-    }
-
-    SkString cname, csuffix;
-
-    const char* start = strrchr(cpath, '/');
-    if (NULL == start) {
-        start = cpath;
-    } else {
-        start += 1;
-    }
-    const char* stop = strrchr(cpath, '.');
-    if (NULL == stop) {
-        return NULL;
-    } else {
-        stop += 1;
-    }
-
-    cname.set(start, stop - start - 1);
-    csuffix.set(stop);
-
-    NSBundle* bundle = [NSBundle mainBundle];
-    NSString* name = [NSString stringWithUTF8String:cname.c_str()];
-    NSString* suffix = [NSString stringWithUTF8String:csuffix.c_str()];
-    NSString* path = [bundle pathForResource:name ofType:suffix];
-    NSData* data = [NSData dataWithContentsOfMappedFile:path];
-
-    if (data) {
-        [data retain];
-        SkFILE* rec = new SkFILE;
-        rec->fData = data;
-        rec->fOffset = 0;
-        rec->fLength = [data length];
-        return reinterpret_cast<SkFILE*>(rec);
-    }
-    return NULL;
-}
-
-size_t sk_fgetsize(SkFILE* rec) {
-    SkASSERT(rec);
-    return rec->fLength;
-}
-
-bool sk_frewind(SkFILE* rec) {
-    SkASSERT(rec);
-    rec->fOffset = 0;
-    return true;
-}
-
-size_t sk_fread(void* buffer, size_t byteCount, SkFILE* rec) {
-    if (NULL == buffer) {
-        return rec->fLength;
-    } else {
-        size_t remaining = rec->fLength - rec->fOffset;
-        if (byteCount > remaining) {
-            byteCount = remaining;
-        }
-        memcpy(buffer, (char*)[rec->fData bytes] + rec->fOffset, byteCount);
-        rec->fOffset += byteCount;
-        SkASSERT(rec->fOffset <= rec->fLength);
-        return byteCount;
-    }
-}
-
-size_t sk_fwrite(const void* buffer, size_t byteCount, SkFILE* f) {
-    SkDEBUGFAIL("Not supported yet");
-    return 0;
-}
-
-void sk_fflush(SkFILE* f) {
-    SkDEBUGFAIL("Not supported yet");
-}
-
-void sk_fclose(SkFILE* rec) {
-    SkASSERT(rec);
-    [rec->fData release];
-    delete rec;
-}
-