[Extensions] Convert some SyncExtensionFunctions

extensions/browser/api/power/power_api.h

Index: extensions/browser/api/power/power_api.h
diff --git a/extensions/browser/api/power/power_api.h b/extensions/browser/api/power/power_api.h
index b9d972d75c38889e01fbee1931db5d996d7e178a..db79acaa8a20c17a1d2a9120f05cac5ce3ee5df8 100644
--- a/extensions/browser/api/power/power_api.h
+++ b/extensions/browser/api/power/power_api.h
@@ -24,7 +24,7 @@ class BrowserContext;
 namespace extensions {
 
 // Implementation of the chrome.power.requestKeepAwake API.
-class PowerRequestKeepAwakeFunction : public SyncExtensionFunction {
+class PowerRequestKeepAwakeFunction : public UIThreadExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("power.requestKeepAwake", POWER_REQUESTKEEPAWAKE)
 
@@ -32,11 +32,11 @@ class PowerRequestKeepAwakeFunction : public SyncExtensionFunction {
   ~PowerRequestKeepAwakeFunction() override {}
 
   // ExtensionFunction:
-  bool RunSync() override;
+  ResponseAction Run() override;
 };
 
 // Implementation of the chrome.power.releaseKeepAwake API.
-class PowerReleaseKeepAwakeFunction : public SyncExtensionFunction {
+class PowerReleaseKeepAwakeFunction : public UIThreadExtensionFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("power.releaseKeepAwake", POWER_RELEASEKEEPAWAKE)
 
@@ -44,7 +44,7 @@ class PowerReleaseKeepAwakeFunction : public SyncExtensionFunction {
   ~PowerReleaseKeepAwakeFunction() override {}
 
   // ExtensionFunction:
-  bool RunSync() override;
+  ResponseAction Run() override;
 };
 
 // Handles calls made via the chrome.power API. There is a separate instance of