Move code in components/safe_browsing_db and chrome/browser/s_b/ under the safe_browsing namespace.

chrome/browser/safe_browsing/safe_browsing_store_file.cc

Index: chrome/browser/safe_browsing/safe_browsing_store_file.cc
diff --git a/chrome/browser/safe_browsing/safe_browsing_store_file.cc b/chrome/browser/safe_browsing/safe_browsing_store_file.cc
index 122b517880f89589fccce3c80af88ea64a275bc3..b5ee867c505e4c288fb734afa531b170e37b432e 100644
--- a/chrome/browser/safe_browsing/safe_browsing_store_file.cc
+++ b/chrome/browser/safe_browsing/safe_browsing_store_file.cc
@@ -11,6 +11,8 @@
 #include "base/metrics/sparse_histogram.h"
 #include "components/safe_browsing_db/prefix_set.h"
 
+namespace safe_browsing {
+
 namespace {
 
 // NOTE(shess): kFileMagic should not be a byte-wise palindrome, so
@@ -820,7 +822,7 @@ bool SafeBrowsingStoreFile::FinishChunk() {
 }
 
 bool SafeBrowsingStoreFile::DoUpdate(
-    safe_browsing::PrefixSetBuilder* builder,
+    PrefixSetBuilder* builder,
     std::vector<SBAddFullHash>* add_full_hashes_result) {
   DCHECK(CalledOnValidThread());
   DCHECK(file_.get() || empty_);
@@ -1068,7 +1070,7 @@ bool SafeBrowsingStoreFile::DoUpdate(
 }
 
 bool SafeBrowsingStoreFile::FinishUpdate(
-    safe_browsing::PrefixSetBuilder* builder,
+    PrefixSetBuilder* builder,
     std::vector<SBAddFullHash>* add_full_hashes_result) {
   DCHECK(CalledOnValidThread());
   DCHECK(builder);
@@ -1163,3 +1165,5 @@ bool SafeBrowsingStoreFile::DeleteStore(const base::FilePath& basename) {
 
   return true;
 }
+
+}  // namespace safe_browsing