Fix several problems with the content verification code

extensions/browser/content_hash_reader.h

Index: extensions/browser/content_hash_reader.h
diff --git a/extensions/browser/content_hash_reader.h b/extensions/browser/content_hash_reader.h
index b68378c487c602e6d239aae3824fb4fe5af1170d..cc2ea38b925bbdd99a873ceb1dd9edefe2ce2aa9 100644
--- a/extensions/browser/content_hash_reader.h
+++ b/extensions/browser/content_hash_reader.h
@@ -40,6 +40,12 @@ class ContentHashReader : public base::RefCountedThreadSafe<ContentHashReader> {
   // should likely be discarded.
   bool Init();
 
+  // These return whether we found valid verified_contents.json /
+  // computed_hashes.json files respectively. Note that both of these can be
+  // true but we still didn't find an entry for |relative_path_| in them.
+  bool have_verified_contents() { return have_verified_contents_; }
+  bool have_computed_hashes() { return have_computed_hashes_; }
+
   // Return the number of blocks and block size, respectively. Only valid after
   // calling Init().
   int block_count() const;
@@ -63,6 +69,9 @@ class ContentHashReader : public base::RefCountedThreadSafe<ContentHashReader> {
 
   InitStatus status_;
 
+  bool have_verified_contents_;
+  bool have_computed_hashes_;
+
   // The blocksize used for generating the hashes.
   int block_size_;