Remove the dependency of Extension API from tts_chromeos

chrome/browser/speech/extension_api/tts_engine_extension_api.cc

Index: chrome/browser/speech/extension_api/tts_engine_extension_api.cc
diff --git a/chrome/browser/speech/extension_api/tts_engine_extension_api.cc b/chrome/browser/speech/extension_api/tts_engine_extension_api.cc
index c7f514a1d1a51137d8f736d5cccb20ed4f487c9b..5f06106a88b9557785abd887195aa221ba34b4a9 100644
--- a/chrome/browser/speech/extension_api/tts_engine_extension_api.cc
+++ b/chrome/browser/speech/extension_api/tts_engine_extension_api.cc
@@ -8,11 +8,15 @@
 
 #include "base/json/json_writer.h"
 #include "base/values.h"
+#include "chrome/browser/extensions/component_loader.h"
+#include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/speech/extension_api/tts_engine_extension_observer.h"
 #include "chrome/browser/speech/extension_api/tts_extension_api.h"
 #include "chrome/browser/speech/extension_api/tts_extension_api_constants.h"
 #include "chrome/browser/speech/tts_controller.h"
 #include "chrome/common/extensions/api/speech/tts_engine_manifest_handler.h"
+#include "chrome/common/extensions/extension_constants.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/common/console_message_level.h"
@@ -210,6 +214,26 @@ void TtsExtensionEngine::Resume(Utterance* utterance) {
   WarnIfMissingPauseOrResumeListener(profile, event_router, id);
 }
 
+bool TtsExtensionEngine::LoadBuiltInTtsExtension(Profile* profile) {
+#if defined(OS_CHROMEOS)
+  // Check to see if the engine was previously loaded.
+  if (TtsEngineExtensionObserver::GetInstance(profile)->SawExtensionLoad(
+          extension_misc::kSpeechSynthesisExtensionId, true)) {
+    return false;
+  }
+
+  // Load the component extension into this profile.
+  ExtensionService* extension_service =
+      extensions::ExtensionSystem::Get(profile)->extension_service();
+  DCHECK(extension_service);
+  extension_service->component_loader()
+      ->AddChromeOsSpeechSynthesisExtension();
+  return true;
+#else
+  return false;
+#endif
+}
+
 bool ExtensionTtsEngineSendTtsEventFunction::RunSync() {
   int utterance_id;
   EXTENSION_FUNCTION_VALIDATE(args_->GetInteger(0, &utterance_id));