Move the rest of extension_manifest_constants to top-level extensions/

chrome/common/extensions/api/speech/tts_engine_manifest_handler.cc

Index: chrome/common/extensions/api/speech/tts_engine_manifest_handler.cc
diff --git a/chrome/common/extensions/api/speech/tts_engine_manifest_handler.cc b/chrome/common/extensions/api/speech/tts_engine_manifest_handler.cc
index dd33dc396f9c43e8117531bae2fdbbd5784d3115..bed4937db5e5cfb44a80a2c63e2f473a5d50ae18 100644
--- a/chrome/common/extensions/api/speech/tts_engine_manifest_handler.cc
+++ b/chrome/common/extensions/api/speech/tts_engine_manifest_handler.cc
@@ -8,17 +8,19 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
-#include "chrome/common/extensions/extension_manifest_constants.h"
 #include "extensions/common/error_utils.h"
 #include "extensions/common/manifest.h"
+#include "extensions/common/manifest_constants.h"
 #include "ui/base/l10n/l10n_util.h"
 
-namespace keys = extensions::manifest_keys;
-namespace errors = extension_manifest_errors;
+namespace extensions {
+
+namespace keys = manifest_keys;
+namespace errors = manifest_errors;
 
 namespace {
 
-struct TtsVoices : public extensions::Extension::ManifestData {
+struct TtsVoices : public Extension::ManifestData {
   TtsVoices() {}
   virtual ~TtsVoices() {}
 
@@ -27,8 +29,6 @@ struct TtsVoices : public extensions::Extension::ManifestData {
 
 }  // namespace
 
-namespace extensions {
-
 TtsVoice::TtsVoice() {}
 TtsVoice::~TtsVoice() {}