Add RandomString() and its test, and use it everywhere it makes sense

util/win/process_info_test.cc

 // Copyright 2015 The Crashpad Authors. All rights reserved.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
 #include "util/win/process_info.h"
 
 #include <dbghelp.h>
 #include <intrin.h>
 #include <wchar.h>
 
 #include "base/files/file_path.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/rand_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "gtest/gtest.h"
 #include "test/errors.h"
 #include "test/scoped_temp_dir.h"
 #include "test/paths.h"
 #include "test/win/child_launcher.h"
 #include "util/file/file_io.h"
+#include "util/misc/random_string.h"
 #include "util/misc/uuid.h"
 #include "util/win/command_line.h"
 #include "util/win/get_function.h"
 #include "util/win/handle.h"
 #include "util/win/scoped_handle.h"
 
 namespace crashpad {
 namespace test {
 namespace {
 
@@ skipping 509 matching lines @@
   ASSERT_TRUE(inherited_file.is_valid());
 
   HKEY key;
   ASSERT_EQ(ERROR_SUCCESS,
             RegOpenKeyEx(
                 HKEY_CURRENT_USER, L"SOFTWARE\\Microsoft", 0, KEY_READ, &key));
   ScopedRegistryKey scoped_key(key);
   ASSERT_TRUE(scoped_key.is_valid());
 
   std::wstring mapping_name =
-      base::UTF8ToUTF16(base::StringPrintf("Local\\test_mapping_%d_%I64x",
+      base::UTF8ToUTF16(base::StringPrintf("Local\\test_mapping_%d_%s",
                                            GetCurrentProcessId(),
-                                           base::RandUint64()));
+                                           RandomString().c_str()));
   ScopedKernelHANDLE mapping(CreateFileMapping(INVALID_HANDLE_VALUE,
                                                nullptr,
                                                PAGE_READWRITE,
                                                0,
                                                1024,
                                                mapping_name.c_str()));
   ASSERT_TRUE(mapping.is_valid()) << ErrorMessage("CreateFileMapping");
 
   ProcessInfo info;
   info.Initialize(GetCurrentProcess());
@@ skipping 64 matching lines @@
   EXPECT_TRUE(
       info.LoggingRangeIsFullyReadable(CheckedRange<WinVMAddress, WinVMSize>(
           reinterpret_cast<WinVMAddress>(safe_memory.get()), kAllocationSize)));
   EXPECT_FALSE(info.LoggingRangeIsFullyReadable(
       CheckedRange<WinVMAddress, WinVMSize>(0, 1024)));
 }
 
 }  // namespace
 }  // namespace test
 }  // namespace crashpad