Replace most LOG/CHECK statements with DLOG/DCHECK statements in base.

[ Reland of 107042 http://codereview.chromium.org/8368009 ]

I tried hard not to change CHECKs that had side effects. I kept fatal checks
that seemed security or debugging-info (in crash reports) sensitive, and ones
that seems particularly well-conceived.
Review URL: http://codereview.chromium.org/8341026

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@107434 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/base/event_recorder_win.cc b/base/event_recorder_win.cc
index b2473809..11bf0f0c 100644
--- a/base/event_recorder_win.cc
+++ b/base/event_recorder_win.cc
@@ -24,13 +24,13 @@
 
 LRESULT CALLBACK StaticRecordWndProc(int nCode, WPARAM wParam,
                                      LPARAM lParam) {
-  CHECK(EventRecorder::current());
+  DCHECK(EventRecorder::current());
   return EventRecorder::current()->RecordWndProc(nCode, wParam, lParam);
 }
 
 LRESULT CALLBACK StaticPlaybackWndProc(int nCode, WPARAM wParam,
                                        LPARAM lParam) {
-  CHECK(EventRecorder::current());
+  DCHECK(EventRecorder::current());
   return EventRecorder::current()->PlaybackWndProc(nCode, wParam, lParam);
 }