Move FilePathWatcher to base/files.

base/files/file_path_watcher_win.cc

 // Copyright (c) 2011 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 "content/common/file_path_watcher/file_path_watcher.h"
+#include "base/files/file_path_watcher.h"
 
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "base/message_loop_proxy.h"
 #include "base/time.h"
 #include "base/win/object_watcher.h"
 
 namespace {
 
-class FilePathWatcherImpl : public FilePathWatcher::PlatformDelegate,
-                            public base::win::ObjectWatcher::Delegate,
-                            public MessageLoop::DestructionObserver {
+class FilePathWatcherImpl
+    : public base::files::FilePathWatcher::PlatformDelegate,
+      public base::win::ObjectWatcher::Delegate,
+      public MessageLoop::DestructionObserver {
  public:
   FilePathWatcherImpl() : delegate_(NULL), handle_(INVALID_HANDLE_VALUE) {}
 
   // FilePathWatcher::PlatformDelegate overrides.
   virtual bool Watch(const FilePath& path,
-                     FilePathWatcher::Delegate* delegate) OVERRIDE;
+                     base::files::FilePathWatcher::Delegate* delegate) OVERRIDE;
   virtual void Cancel() OVERRIDE;
 
   // Deletion of the FilePathWatcher will call Cancel() to dispose of this
   // object in the right thread. This also observes destruction of the required
   // cleanup thread, in case it quits before Cancel() is called.
   virtual void WillDestroyCurrentMessageLoop() OVERRIDE;
 
   // Callback from MessageLoopForIO.
   virtual void OnObjectSignaled(HANDLE object);
 
  private:
   virtual ~FilePathWatcherImpl() {}
 
   // Setup a watch handle for directory |dir|. Returns true if no fatal error
   // occurs. |handle| will receive the handle value if |dir| is watchable,
   // otherwise INVALID_HANDLE_VALUE.
   static bool SetupWatchHandle(const FilePath& dir, HANDLE* handle)
       WARN_UNUSED_RESULT;
 
   // (Re-)Initialize the watch handle.
   bool UpdateWatch() WARN_UNUSED_RESULT;
 
   // Destroy the watch handle.
   void DestroyWatch();
 
   // Cleans up and stops observing the |message_loop_| thread.
   void CancelOnMessageLoopThread() OVERRIDE;
 
   // Delegate to notify upon changes.
-  scoped_refptr<FilePathWatcher::Delegate> delegate_;
+  scoped_refptr<base::files::FilePathWatcher::Delegate> delegate_;
 
   // Path we're supposed to watch (passed to delegate).
   FilePath target_;
 
   // Handle for FindFirstChangeNotification.
   HANDLE handle_;
 
   // ObjectWatcher to watch handle_ for events.
   base::win::ObjectWatcher watcher_;
 
   // Keep track of the last modified time of the file.  We use nulltime
   // to represent the file not existing.
   base::Time last_modified_;
 
   // The time at which we processed the first notification with the
   // |last_modified_| time stamp.
   base::Time first_notification_;
 
   DISALLOW_COPY_AND_ASSIGN(FilePathWatcherImpl);
 };
 
-bool FilePathWatcherImpl::Watch(const FilePath& path,
-                                FilePathWatcher::Delegate* delegate) {
+bool FilePathWatcherImpl::Watch(
+    const FilePath& path,
+    base::files::FilePathWatcher::Delegate* delegate) {
   DCHECK(target_.value().empty());  // Can only watch one path.
 
   set_message_loop(base::MessageLoopProxy::CreateForCurrentThread());
   delegate_ = delegate;
   target_ = path;
   MessageLoop::current()->AddDestructionObserver(this);
 
   if (!UpdateWatch())
     return false;
 
   watcher_.StartWatching(handle_, this);
 
   return true;
 }
 
 void FilePathWatcherImpl::Cancel() {
   if (!delegate_) {
     // Watch was never called, or the |message_loop_| has already quit.
     set_cancelled();
     return;
   }
 
   // Switch to the file thread if necessary so we can stop |watcher_|.
   if (!message_loop()->BelongsToCurrentThread()) {
-    message_loop()->PostTask(FROM_HERE,
-                             new FilePathWatcher::CancelTask(this));
+    message_loop()->PostTask(
+        FROM_HERE,
+        new base::files::FilePathWatcher::CancelTask(this));
   } else {
     CancelOnMessageLoopThread();
   }
 }
 
 void FilePathWatcherImpl::CancelOnMessageLoopThread() {
   set_cancelled();
 
   if (handle_ != INVALID_HANDLE_VALUE)
     DestroyWatch();
@@ skipping 147 matching lines @@
 }
 
 void FilePathWatcherImpl::DestroyWatch() {
   watcher_.StopWatching();
   FindCloseChangeNotification(handle_);
   handle_ = INVALID_HANDLE_VALUE;
 }
 
 }  // namespace
 
-FilePathWatcher::FilePathWatcher() {
+base::files::FilePathWatcher::FilePathWatcher() {
   impl_ = new FilePathWatcherImpl();
 }