Bug 1620560 - Part 4: Mark BlobImpl::GetFileId as const r=smaug

Differential Revision: https://phabricator.services.mozilla.com/D145669

dom/file/BaseBlobImpl.cpp

@@ -51,7 +51,7 @@ int64_t BaseBlobImpl::GetLastModified(ErrorResult& aRv) {
   return mLastModificationDate / PR_USEC_PER_MSEC;
 }
 
-int64_t BaseBlobImpl::GetFileId() { return -1; }
+int64_t BaseBlobImpl::GetFileId() const { return -1; }
 
 /* static */
 uint64_t BaseBlobImpl::NextSerialNumber() {

dom/file/BaseBlobImpl.h

@@ -97,7 +97,7 @@ class BaseBlobImpl : public BlobImpl {
     aRv.Throw(NS_ERROR_NOT_IMPLEMENTED);
   }
 
-  int64_t GetFileId() override;
+  int64_t GetFileId() const override;
 
   void SetLazyData(const nsAString& aName, const nsAString& aContentType,
                    uint64_t aLength, int64_t aLastModifiedDate) override {

dom/file/Blob.cpp

@@ -241,7 +241,7 @@ already_AddRefed<Blob> Blob::Constructor(
   return blob.forget();
 }
 
-int64_t Blob::GetFileId() { return mImpl->GetFileId(); }
+int64_t Blob::GetFileId() const { return mImpl->GetFileId(); }
 
 bool Blob::IsMemoryFile() const { return mImpl->IsMemoryFile(); }
 

dom/file/Blob.h

@@ -81,7 +81,7 @@ class Blob : public nsSupportsWeakReference, public nsWrapperCache {
 
   void CreateInputStream(nsIInputStream** aStream, ErrorResult& aRv) const;
 
-  int64_t GetFileId();
+  int64_t GetFileId() const;
 
   // A utility function that enforces the spec constraints on the type of a
   // blob: no codepoints outside the ASCII range (otherwise type becomes empty)

dom/file/BlobImpl.h

@@ -85,7 +85,7 @@ class BlobImpl : public nsISupports {
   virtual void CreateInputStream(nsIInputStream** aStream,
                                  ErrorResult& aRv) const = 0;
 
-  virtual int64_t GetFileId() = 0;
+  virtual int64_t GetFileId() const = 0;
 
   nsresult GetSendInfo(nsIInputStream** aBody, uint64_t* aContentLength,
                        nsACString& aContentType, nsACString& aCharset);

dom/file/FileBlobImpl.h

@@ -85,7 +85,7 @@ class FileBlobImpl : public BlobImpl {
   void CreateInputStream(nsIInputStream** aStream,
                          ErrorResult& aRv) const override;
 
-  int64_t GetFileId() override { return mFileId; }
+  int64_t GetFileId() const override { return mFileId; }
 
   void SetLazyData(const nsAString& aName, const nsAString& aContentType,
                    uint64_t aLength, int64_t aLastModifiedDate) override {

dom/file/StreamBlobImpl.h

@@ -42,7 +42,7 @@ class StreamBlobImpl final : public BaseBlobImpl, public nsIMemoryReporter {
 
   bool IsMemoryFile() const override { return true; }
 
-  int64_t GetFileId() override { return mFileId; }
+  int64_t GetFileId() const override { return mFileId; }
 
   void SetFileId(int64_t aFileId) { mFileId = aFileId; }