Move PathExists to base namespace.

chrome_frame/test/mock_ie_event_sink_actions.h

Index: chrome_frame/test/mock_ie_event_sink_actions.h
diff --git a/chrome_frame/test/mock_ie_event_sink_actions.h b/chrome_frame/test/mock_ie_event_sink_actions.h
index d952c81006db9c6ac58a5771aea0a57e0d5f5b6b..9c8f4c798a85c4d6993672f3d1bf398568f4654e 100644
--- a/chrome_frame/test/mock_ie_event_sink_actions.h
+++ b/chrome_frame/test/mock_ie_event_sink_actions.h
@@ -385,7 +385,7 @@ ACTION_P(VerifySelectedText, expected_text) {
 
 ACTION_P3(CloseWhenFileSaved, mock, file, timeout_ms) {
   base::Time start = base::Time::Now();
-  while (!file_util::PathExists(file)) {
+  while (!base::PathExists(file)) {
     if ((base::Time::Now() - start).InMilliseconds() > timeout_ms) {
       ADD_FAILURE() << "File was not saved within timeout";
       TakeSnapshotAndLog();
@@ -398,7 +398,7 @@ ACTION_P3(CloseWhenFileSaved, mock, file, timeout_ms) {
 
 ACTION_P2(WaitForFileSave, file, timeout_ms) {
   base::Time start = base::Time::Now();
-  while (!file_util::PathExists(file)) {
+  while (!base::PathExists(file)) {
     base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(200));
     if ((base::Time::Now() - start).InMilliseconds() > timeout_ms) {
       ADD_FAILURE() << "File was not saved within timeout";