Re-land "Move CachingPermutedEntropyProvider to its own file."

Reland of https://codereview.chromium.org/21127007/

The original CL changed a std::string to a const char* in
a test, which resulted in saving a ref to a temporary that
was later deref'd, which is now fixed in this CL.

BUG=266007
TEST=Existing unit tests.
[email protected],[email protected]
NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/21893002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@215291 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/browser/prefs/browser_prefs.cc b/chrome/browser/prefs/browser_prefs.cc
index a7a936b..c6328c6 100644
--- a/chrome/browser/prefs/browser_prefs.cc
+++ b/chrome/browser/prefs/browser_prefs.cc
@@ -89,7 +89,7 @@
 #include "chrome/browser/ui/window_snapshot/window_snapshot.h"
 #include "chrome/browser/upgrade_detector.h"
 #include "chrome/browser/web_resource/promo_resource_service.h"
-#include "chrome/common/metrics/entropy_provider.h"
+#include "chrome/common/metrics/caching_permuted_entropy_provider.h"
 #include "chrome/common/pref_names.h"
 #include "components/autofill/core/browser/autofill_manager.h"
 #include "components/user_prefs/pref_registry_syncable.h"