Update base::StartsWith calls to new form

chrome/browser/extensions/blob_reader.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/blob_reader.h"
 
 #include "base/format_macros.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/browser_thread.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_headers.h"
 #include "net/url_request/url_fetcher.h"
 #include "net/url_request/url_request_context.h"
 #include "net/url_request/url_request_context_getter.h"
 
 BlobReader::BlobReader(Profile* profile,
                        const std::string& blob_uuid,
                        BlobReadCallback callback)
     : callback_(callback) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   GURL blob_url;
-  if (base::StartsWithASCII(blob_uuid, "blob:blobinternal", true)) {
+  if (base::StartsWith(blob_uuid, "blob:blobinternal",
+                       base::CompareCase::SENSITIVE)) {
     // TODO(michaeln): remove support for deprecated blob urls
     blob_url = GURL(blob_uuid);
   } else {
     blob_url = GURL(std::string("blob:uuid/") + blob_uuid);
   }
   DCHECK(blob_url.is_valid());
   fetcher_ = net::URLFetcher::Create(blob_url, net::URLFetcher::GET, this);
   fetcher_->SetRequestContext(profile->GetRequestContext());
 }
 
@@ skipping 22 matching lines @@
 void BlobReader::OnURLFetchComplete(const net::URLFetcher* source) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   scoped_ptr<std::string> response(new std::string);
   int64 first = 0, last = 0, length = 0;
   source->GetResponseAsString(response.get());
   source->GetResponseHeaders()->GetContentRange(&first, &last, &length);
   callback_.Run(response.Pass(), length);
 
   delete this;
 }