Removed file_path_watcher_mac.cc, which isn't used anymore.

base/files/file_path_watcher_kqueue.cc

Index: base/files/file_path_watcher_kqueue.cc
diff --git a/base/files/file_path_watcher_kqueue.cc b/base/files/file_path_watcher_kqueue.cc
index 29c104a12f82f4dc25ef5c7c67c1a38b8f0a4377..6221a62f379e2385dadabca22de0893451c92068 100644
--- a/base/files/file_path_watcher_kqueue.cc
+++ b/base/files/file_path_watcher_kqueue.cc
@@ -205,7 +205,7 @@ void FilePathWatcherImpl::CloseFileDescriptor(int *fd) {
   }
 
   if (HANDLE_EINTR(close(*fd)) != 0) {
-    PLOG(ERROR) << "close";
+    DPLOG(ERROR) << "close";

[Mattias Nissler (ping if slow), 2012/06/04 07:40:50]

Why are you muting all the error logging? Many of these I'd consider pretty
useful.

[Joao da Silva, 2012/06/04 08:06:44]

From http://codereview.chromium.org/8341026/, which is the CL the reintroduced
the _mac.cc file after it was removed.

   }
   *fd = -1;
 }
@@ -213,7 +213,7 @@ void FilePathWatcherImpl::CloseFileDescriptor(int *fd) {
 bool FilePathWatcherImpl::AreKeventValuesValid(struct kevent* kevents,
                                                int count) {
   if (count < 0) {
-    PLOG(ERROR) << "kevent";
+    DPLOG(ERROR) << "kevent";
     return false;
   }
   bool valid = true;
@@ -237,7 +237,7 @@ bool FilePathWatcherImpl::AreKeventValuesValid(struct kevent* kevents,
         path_name = base::StringPrintf(
             "fd %d", *reinterpret_cast<int*>(&kevents[i].ident));
       }
-      LOG(ERROR) << "Error: " << kevents[i].data << " for " << path_name;
+      DLOG(ERROR) << "Error: " << kevents[i].data << " for " << path_name;
       valid = false;
     }
   }
@@ -348,8 +348,8 @@ bool FilePathWatcherImpl::UpdateWatches(bool* target_file_affected) {
 
 void FilePathWatcherImpl::OnFileCanReadWithoutBlocking(int fd) {
   DCHECK(MessageLoopForIO::current());
-  CHECK_EQ(fd, kqueue_);
-  CHECK(events_.size());
+  DCHECK_EQ(fd, kqueue_);
+  DCHECK(events_.size());
 
   // Request the file system update notifications that have occurred and return
   // them in |updates|. |count| will contain the number of updates that have
@@ -442,12 +442,12 @@ bool FilePathWatcherImpl::Watch(const FilePath& path,
 
   kqueue_ = kqueue();
   if (kqueue_ == -1) {
-    PLOG(ERROR) << "kqueue";
+    DPLOG(ERROR) << "kqueue";
     return false;
   }
 
   int last_entry = EventsForPath(target_, &events_);
-  CHECK_NE(last_entry, 0);
+  DCHECK_NE(last_entry, 0);
 
   EventVector responses(last_entry);