Update components for new prefs location.

This is a search-and-replace update for includes with "base/prefs" ->
"components/prefs" and the headers re-sorted.

DEPS files were updated to allow the components in question to depend on
components/prefs.

This should be a no-op from a build perspective.

BUG=583034

Review URL: https://codereview.chromium.org/1651203002

Cr-Commit-Position: refs/heads/master@{#372780}
diff --git a/components/prefs/default_pref_store_unittest.cc b/components/prefs/default_pref_store_unittest.cc
index 597ca55..06cabc01 100644
--- a/components/prefs/default_pref_store_unittest.cc
+++ b/components/prefs/default_pref_store_unittest.cc
@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 #include "base/macros.h"
-#include "base/prefs/default_pref_store.h"
+#include "components/prefs/default_pref_store.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using base::StringValue;