iwyu: Include stringprintf.h where appropriate, part 3.

chrome/test/live_sync/live_sync_test.cc

Index: chrome/test/live_sync/live_sync_test.cc
diff --git a/chrome/test/live_sync/live_sync_test.cc b/chrome/test/live_sync/live_sync_test.cc
index fa2bf8c789e5fe9594c06f82c0c0fbb2c3bd3a12..f6ce1b9ad4d48fdd4470080f4672b4f1d89dea0d 100644
--- a/chrome/test/live_sync/live_sync_test.cc
+++ b/chrome/test/live_sync/live_sync_test.cc
@@ -10,6 +10,7 @@
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/path_service.h"
+#include "base/stringprintf.h"
 #include "base/string_util.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/task.h"
@@ -265,7 +266,7 @@ bool LiveSyncTest::SetupClients() {
   // Create the required number of sync profiles and clients.
   for (int i = 0; i < num_clients_; ++i) {
     profiles_.push_back(MakeProfile(
-        StringPrintf(FILE_PATH_LITERAL("Profile%d"), i)));
+        base::StringPrintf(FILE_PATH_LITERAL("Profile%d"), i)));
     EXPECT_FALSE(GetProfile(i) == NULL) << "GetProfile(" << i << ") failed.";
     clients_.push_back(
         new ProfileSyncServiceHarness(GetProfile(i), username_, password_, i));