Implement Google network speech synthesis

chrome/browser/extensions/api/system_private/system_private_api.cc

Index: chrome/browser/extensions/api/system_private/system_private_api.cc
diff --git a/chrome/browser/extensions/api/system_private/system_private_api.cc b/chrome/browser/extensions/api/system_private/system_private_api.cc
index 20e3c37d59b17bc9f95b992860de3a93d7048828..0ef410316c10f648cc403eba2a913daaca5d403a 100644
--- a/chrome/browser/extensions/api/system_private/system_private_api.cc
+++ b/chrome/browser/extensions/api/system_private/system_private_api.cc
@@ -11,6 +11,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/extensions/api/system_private.h"
 #include "chrome/common/pref_names.h"
+#include "google_apis/google_api_keys.h"
 
 #if defined(OS_CHROMEOS)
 #include "chromeos/dbus/dbus_thread_manager.h"
@@ -132,6 +133,11 @@ bool SystemPrivateGetUpdateStatusFunction::RunImpl() {
   return true;
 }
 
+bool SystemPrivateGetApiKeyFunction::RunImpl() {
+  SetResult(new base::StringValue(google_apis::GetAPIKey()));
+  return true;
+}
+
 void DispatchVolumeChangedEvent(double volume, bool is_volume_muted) {
   base::DictionaryValue* dict = new base::DictionaryValue();
   dict->SetDouble(kVolumeKey, volume);