Add the boilerplate for actions to File System Provider API.

chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.h

Index: chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.h
diff --git a/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.h b/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.h
index 224ac9a94cc4637c0307775ccc91933ec968dce6..a0084ccf065b42d71ea520d3c287901989cd99ac 100644
--- a/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.h
+++ b/chrome/browser/chromeos/extensions/file_system_provider/file_system_provider_api.h
@@ -68,7 +68,7 @@ class FileSystemProviderInternalUnmountRequestedSuccessFunction
  public:
   DECLARE_EXTENSION_FUNCTION(
       "fileSystemProviderInternal.unmountRequestedSuccess",
-      FILESYSTEMPROVIDERINTERNAL_GETMETADATAREQUESTEDSUCCESS)
+      FILESYSTEMPROVIDERINTERNAL_UNMOUNTREQUESTEDSUCCESS)
 
  protected:
   ~FileSystemProviderInternalUnmountRequestedSuccessFunction() override {}
@@ -87,6 +87,18 @@ class FileSystemProviderInternalGetMetadataRequestedSuccessFunction
   bool RunWhenValid() override;
 };
 
+class FileSystemProviderInternalGetActionsRequestedSuccessFunction
+    : public FileSystemProviderInternalFunction {
+ public:
+  DECLARE_EXTENSION_FUNCTION(
+      "fileSystemProviderInternal.getActionsRequestedSuccess",
+      FILESYSTEMPROVIDERINTERNAL_GETACTIONSREQUESTEDSUCCESS)
+
+ protected:
+  ~FileSystemProviderInternalGetActionsRequestedSuccessFunction() override {}
+  bool RunWhenValid() override;
+};
+
 class FileSystemProviderInternalReadDirectoryRequestedSuccessFunction
     : public FileSystemProviderInternalFunction {
  public: