Move ImportantFileWriter to base/. It now has two consumers, base/prefs and chrome/.

base/files/important_file_writer_unittest.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 "chrome/common/important_file_writer.h"
+#include "base/files/important_file_writer.h"
 
 #include "base/compiler_specific.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/scoped_temp_dir.h"
 #include "base/threading/thread.h"
 #include "base/time.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
+namespace base {
+
 namespace {
 
 std::string GetFileContent(const FilePath& path) {
   std::string content;
   if (!file_util::ReadFileToString(path, &content)) {
     NOTREACHED();
   }
   return content;
 }
 
@@ skipping 24 matching lines @@
  protected:
   FilePath file_;
   MessageLoop loop_;
 
  private:
   ScopedTempDir temp_dir_;
 };
 
 TEST_F(ImportantFileWriterTest, Basic) {
   ImportantFileWriter writer(file_,
-                             base::MessageLoopProxy::current());
+                             MessageLoopProxy::current());
   EXPECT_FALSE(file_util::PathExists(writer.path()));
   writer.WriteNow("foo");
   loop_.RunAllPending();
 
   ASSERT_TRUE(file_util::PathExists(writer.path()));
   EXPECT_EQ("foo", GetFileContent(writer.path()));
 }
 
 TEST_F(ImportantFileWriterTest, ScheduleWrite) {
   ImportantFileWriter writer(file_,
-                             base::MessageLoopProxy::current());
-  writer.set_commit_interval(base::TimeDelta::FromMilliseconds(25));
+                             MessageLoopProxy::current());
+  writer.set_commit_interval(TimeDelta::FromMilliseconds(25));
   EXPECT_FALSE(writer.HasPendingWrite());
   DataSerializer serializer("foo");
   writer.ScheduleWrite(&serializer);
   EXPECT_TRUE(writer.HasPendingWrite());
   MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
       MessageLoop::QuitClosure(),
-      base::TimeDelta::FromMilliseconds(100));
+      TimeDelta::FromMilliseconds(100));
   MessageLoop::current()->Run();
   EXPECT_FALSE(writer.HasPendingWrite());
   ASSERT_TRUE(file_util::PathExists(writer.path()));
   EXPECT_EQ("foo", GetFileContent(writer.path()));
 }
 
 TEST_F(ImportantFileWriterTest, DoScheduledWrite) {
   ImportantFileWriter writer(file_,
-                             base::MessageLoopProxy::current());
+                             MessageLoopProxy::current());
   EXPECT_FALSE(writer.HasPendingWrite());
   DataSerializer serializer("foo");
   writer.ScheduleWrite(&serializer);
   EXPECT_TRUE(writer.HasPendingWrite());
   writer.DoScheduledWrite();
   MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
       MessageLoop::QuitClosure(),
-      base::TimeDelta::FromMilliseconds(100));
+      TimeDelta::FromMilliseconds(100));
   MessageLoop::current()->Run();
   EXPECT_FALSE(writer.HasPendingWrite());
   ASSERT_TRUE(file_util::PathExists(writer.path()));
   EXPECT_EQ("foo", GetFileContent(writer.path()));
 }
 
 // Flaky - http://crbug.com/109292
 TEST_F(ImportantFileWriterTest, DISABLED_BatchingWrites) {
   ImportantFileWriter writer(file_,
-                             base::MessageLoopProxy::current());
-  writer.set_commit_interval(base::TimeDelta::FromMilliseconds(25));
+                             MessageLoopProxy::current());
+  writer.set_commit_interval(TimeDelta::FromMilliseconds(25));
   DataSerializer foo("foo"), bar("bar"), baz("baz");
   writer.ScheduleWrite(&foo);
   writer.ScheduleWrite(&bar);
   writer.ScheduleWrite(&baz);
   MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
       MessageLoop::QuitClosure(),
-      base::TimeDelta::FromMilliseconds(100));
+      TimeDelta::FromMilliseconds(100));
   MessageLoop::current()->Run();
   ASSERT_TRUE(file_util::PathExists(writer.path()));
   EXPECT_EQ("baz", GetFileContent(writer.path()));
 }
+
+}  // namespace base