Small fixes to allow unit tests to compile with gcc 4.7.x (tested with gcc 4.7.2)

net/cookies/cookie_monster_perftest.cc

 // Copyright (c) 2012 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 <algorithm>
 
 #include "base/bind.h"
 #include "base/message_loop.h"
 #include "base/perftimer.h"
 #include "base/string_util.h"
@@ skipping 359 matching lines @@
 // if GC runs twice in a row without any change to the store, the second
 // GC run will not do anything the first one didn't.  That's why this is
 // a performance test.  The test should be considered to pass if all the
 // times reported are approximately the same--this indicates that no GC
 // happened repeatedly for any case.
 TEST_F(CookieMonsterTest, TestGCTimes) {
   SetCookieCallback setCookieCallback;
 
   const struct TestCase {
     const char* name;
-    int num_cookies;
-    int num_old_cookies;
+    size_t num_cookies;
+    size_t num_old_cookies;
   } test_cases[] = {
     {
       // A whole lot of recent cookies; gc shouldn't happen.
       "all_recent",
       CookieMonster::kMaxCookies * 2,
       0,
     }, {
       // Some old cookies, but still overflowing max.
       "mostly_recent",
       CookieMonster::kMaxCookies * 2,
@@ skipping 29 matching lines @@
     setCookieCallback.SetCookie(cm, gurl, cookie_line);
 
     PerfTimeLogger timer((std::string("GC_") + test_case.name).c_str());
     for (int i = 0; i < kNumCookies; i++)
       setCookieCallback.SetCookie(cm, gurl, cookie_line);
     timer.Done();
   }
 }
 
 }  // namespace net