Implement Google network speech synthesis

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

Index: chrome/browser/extensions/api/system_private/system_private_api.h
diff --git a/chrome/browser/extensions/api/system_private/system_private_api.h b/chrome/browser/extensions/api/system_private/system_private_api.h
index 33f91ba06ebb8268f3f2df0b66acba8e7f5ffddf..ddb820bd1ff5ab6a12edaabecb76adbe10b8519c 100644
--- a/chrome/browser/extensions/api/system_private/system_private_api.h
+++ b/chrome/browser/extensions/api/system_private/system_private_api.h
@@ -39,6 +39,18 @@ class SystemPrivateGetUpdateStatusFunction
   virtual bool RunImpl() OVERRIDE;
 };
 
+// API function which returns the Google API key.
+class SystemPrivateGetApiKeyFunction : public SyncExtensionFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION("systemPrivate.getApiKey", SYSTEMPRIVATE_GETAPIKEY)
+
+ protected:
+  virtual ~SystemPrivateGetApiKeyFunction() {}
+
+  // ExtensionFunction:
+  virtual bool RunImpl() OVERRIDE;
+};
+
 // Dispatches systemPrivate.onBrightnessChanged event for extensions.
 void DispatchBrightnessChangedEvent(int brightness, bool user_initiated);