[Sync] Fix namespaces for the browser_sync component.

chrome/browser/sync/test/integration/sync_test.h

Index: chrome/browser/sync/test/integration/sync_test.h
diff --git a/chrome/browser/sync/test/integration/sync_test.h b/chrome/browser/sync/test/integration/sync_test.h
index dd6a5f1eef08a4b0cd48363525f5915a33b3c01a..6ba2eb3dc13bfe1399459f6be2b97d5f55191f84 100644
--- a/chrome/browser/sync/test/integration/sync_test.h
+++ b/chrome/browser/sync/test/integration/sync_test.h
@@ -39,7 +39,6 @@
 #define E2E_ONLY(test_name) MACRO_CONCAT(DISABLED_E2ETest, test_name)
 #define E2E_ENABLED(test_name) MACRO_CONCAT(test_name, E2ETest)
 
-class ProfileSyncService;
 class ProfileSyncServiceHarness;
 class P2PInvalidationForwarder;
 class P2PSyncRefresher;
@@ -47,19 +46,23 @@ class P2PSyncRefresher;
 namespace base {
 class CommandLine;
 class ScopedTempDir;
-}
+}  // namespace base
+
+namespace browser_sync {
+class ProfileSyncService;
+}  // namespace browser_sync
 
 namespace fake_server {
 class FakeServer;
 class FakeServerInvalidationService;
-}
+}  // namespace fake_server
 
 namespace net {
 class FakeURLFetcherFactory;
 class ScopedDefaultHostResolverProc;
 class URLFetcherImplFactory;
 class URLRequestContextGetter;
-}
+}  // namespace net
 
 // This is the base class for integration tests for all sync data types. Derived
 // classes must be defined for each sync data type. Individual tests are defined
@@ -149,10 +152,10 @@ class SyncTest : public InProcessBrowserTest {
   }
 
   // Returns a ProfileSyncService at the given index.
-  ProfileSyncService* GetSyncService(int index);
+  browser_sync::ProfileSyncService* GetSyncService(int index);
 
   // Returns the set of ProfileSyncServices.
-  std::vector<ProfileSyncService*> GetSyncServices();
+  std::vector<browser_sync::ProfileSyncService*> GetSyncServices();
 
   // Returns a pointer to the sync profile that is used to verify changes to
   // individual sync profiles. Callee owns the object and manages its lifetime.