[Sync] Rename csync namespace to syncer

tools/valgrind/drmemory/suppressions_full.txt

 # This file contains suppressions for the Dr.Memory tool, see
 # http://dev.chromium.org/developers/how-tos/using-drmemory
 #
 # This file should contain suppressions only for the reports happening
 # in the 'full' mode (drmemory_full).
 # For the reports that can happen in the light mode (a.k.a. drmemory_light),
 # please use suppressions.txt instead.
 
 ###############################################################
 # Known reports on the third party we have no control over.
@@ skipping 1021 matching lines @@
 ...
 *!TestURLRequestContext::Init
 
 LEAK
 name=http://crbug.com/79933 (2)
 ...
 *!TestURLRequestContext::TestURLRequestContext
 *!TestURLRequestContextGetter::GetURLRequestContext
 *!notifier::SingleLoginAttempt::SingleLoginAttempt
 *!notifier::Login::StartConnection
-*!csync::InvalidationNotifier::UpdateCredentials
-*!csync::NonBlockingInvalidationNotifier::Core::UpdateCredentials
+*!syncer::InvalidationNotifier::UpdateCredentials
+*!syncer::NonBlockingInvalidationNotifier::Core::UpdateCredentials
 
 LEAK
 name=http://crbug.com/79933 (3)
 ...
 *!TestURLRequestContext::TestURLRequestContext
 *!TestURLRequestContextGetter::GetURLRequestContext
 *!URLFetcher::Core::StartURLRequest
 
 LEAK
 name=http://crbug.com/79933 (4)
@@ skipping 140 matching lines @@
 *!ProfileImpl::InitRegisteredProtocolHandlers
 *!ProfileImpl::DoFinalInit
 *!ProfileImpl::OnPrefsLoaded
 
 LEAK
 name=http://crbug.com/91465
 *!generic_cpp_alloc
 *!operator new
 *!browser_sync::internal::WeakHandleCore<browser_sync::JsBackend>::*
 *!browser_sync::WeakHandle<browser_sync::JsBackend>::*
-*!csync::SyncManager::SyncInternal::Init
+*!syncer::SyncManager::SyncInternal::Init
 
 LEAK
 name=http://crbug.com/91491
 ...
 *!CrxUpdateService::ProcessPendingItems
 
 UNINITIALIZED READ
 name=http://crbug.com/92026 (1)
 softokn3.dll!FC_GetFunctionList
 ...
@@ skipping 116 matching lines @@
 *!cricket::RelayEntry::Connect
 *!cricket::RelayPort::PrepareAddress
 *!cricket::AllocationSequence::CreateRelayPorts
 
 LEAK
 name=http://crbug.com/125807
 *!generic_cpp_alloc
 *!operator new
 *!TransportSecurityPersister::TransportSecurityPersister
 *!TransportSecurityPersisterTest::TransportSecurityPersisterTest