Replace most LOG statements with DLOG statements in base.

base/message_pump_glib.cc

Index: base/message_pump_glib.cc
===================================================================
--- base/message_pump_glib.cc	(revision 106858)
+++ base/message_pump_glib.cc	(working copy)
@@ -145,7 +145,10 @@
       wakeup_gpollfd_(new GPollFD) {
   // Create our wakeup pipe, which is used to flag when work was scheduled.
   int fds[2];
-  CHECK_EQ(pipe(fds), 0);
+  int ret = pipe(fds);
+  DCHECK_EQ(ret, 0);
+  (void)ret;  // Prevent warning in release mode.
+
   wakeup_pipe_read_  = fds[0];
   wakeup_pipe_write_ = fds[1];
   wakeup_gpollfd_->fd = wakeup_pipe_read_;