Use the exact-width integer types defined in <stdint.h> rather than

"base/basictypes.h" in net/base/mime_sniffer*.

R=asanka@chromium.org
BUG=488550
TEST=none

Review URL: https://codereview.chromium.org/1151353005

Cr-Commit-Position: refs/heads/master@{#333098}

net/base/mime_sniffer.cc

@@ -92,11 +92,11 @@
 // Note that our definition of HTML payload is much stricter than IE's
 // definition and roughly the same as Firefox's definition.
 
+#include <stdint.h>
 #include <string>
 
 #include "net/base/mime_sniffer.h"
 
-#include "base/basictypes.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_util.h"
@@ -949,10 +949,10 @@ bool LooksLikeBinary(const char* content, size_t size) {
   // one bit per byte, with 1 for a "binary" bit, and 0 for a "text" bit. The
   // least-significant bit represents byte 0x00, the most-significant bit
   // represents byte 0x1F.
-  const uint32 kBinaryBits =
+  const uint32_t kBinaryBits =
       ~(1u << '\t' | 1u << '\n' | 1u << '\r' | 1u << '\f' | 1u << '\x1b');
   for (size_t i = 0; i < size; ++i) {
-    uint8 byte = static_cast<uint8>(content[i]);
+    uint8_t byte = static_cast<uint8_t>(content[i]);
     if (byte < 0x20 && (kBinaryBits & (1u << byte)))
       return true;
   }

net/base/mime_sniffer_perftest.cc

@@ -99,7 +99,7 @@ TEST(MimeSnifferTest, PlainTextPerfTest) {
   base::ElapsedTimer elapsed_timer;
   RunLooksLikeBinary(plaintext, kMeasuredIterations);
   LOG(INFO) << (elapsed_timer.Elapsed().InMicroseconds() * 1000 * 1024 /
-                (static_cast<int64>(plaintext.size()) * kMeasuredIterations))
+                (static_cast<int64_t>(plaintext.size()) * kMeasuredIterations))
             << "ns per KB";
 }
 

net/base/mime_sniffer_unittest.cc

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "base/basictypes.h"
 #include "net/base/mime_sniffer.h"
+
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"