Have the Notification Id Generator produce readable results

content/browser/notifications/notification_id_generator.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/notifications/notification_id_generator.h"
 
 #include <sstream>
 
+#include "base/base64.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/sha1.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "content/public/browser/browser_context.h"
 #include "url/gurl.h"
 
 namespace content {
 namespace {
 
 const char kPersistentPrefix[] = "p:";
 const char kNonPersistentPrefix[] = "n:";
 
 const char kSeparator = '#';
 
 // Computes a hash based on the path in which the |browser_context| is stored.
 // Since we only store the hash, SHA-1 is used to make the probability of
 // collisions negligible.
 std::string ComputeBrowserContextHash(BrowserContext* browser_context) {
   const base::FilePath path = browser_context->GetPath();
 
 #if defined(OS_WIN)
-  return base::SHA1HashString(base::WideToUTF8(path.value()));
+  std::string path_hash = base::SHA1HashString(base::WideToUTF8(path.value()));
 #else
-  return base::SHA1HashString(path.value());
+  std::string path_hash = base::SHA1HashString(path.value());
 #endif
+
+  return base::HexEncode(path_hash.c_str(), path_hash.length());
 }
 
 }  // namespace
 
 NotificationIdGenerator::NotificationIdGenerator(
     BrowserContext* browser_context,
     int render_process_id)
     : browser_context_(browser_context),
       render_process_id_(render_process_id) {}
 
@@ skipping 15 matching lines @@
     const GURL& origin,
     const std::string& tag,
     int64_t persistent_notification_id) const {
   DCHECK(origin.is_valid());
   DCHECK_EQ(origin, origin.GetOrigin());
 
   std::stringstream stream;
 
   stream << kPersistentPrefix;
   stream << ComputeBrowserContextHash(browser_context_);
-  stream << browser_context_->IsOffTheRecord();
+  stream << base::IntToString(browser_context_->IsOffTheRecord());
   stream << origin;
 
   // Persistent notification ids are unique for the lifetime of the notification
   // database, orthogonal to the renderer that created the notification.
 
-  stream << !!tag.size();
+  stream << base::IntToString(!tag.empty());
   if (tag.size())
     stream << tag;
   else
-    stream << persistent_notification_id;
+    stream << base::Int64ToString(persistent_notification_id);
 
   return stream.str();
 }
 
 std::string NotificationIdGenerator::GenerateForNonPersistentNotification(
     const GURL& origin,
     const std::string& tag,
     int non_persistent_notification_id) const {
   DCHECK(origin.is_valid());
   DCHECK_EQ(origin, origin.GetOrigin());
 
   std::stringstream stream;
 
   stream << kNonPersistentPrefix;
   stream << ComputeBrowserContextHash(browser_context_);
-  stream << browser_context_->IsOffTheRecord();
+  stream << base::IntToString(browser_context_->IsOffTheRecord());
   stream << origin;
 
   // Non-persistent notification ids are unique per renderer process when no
   // tag is being used. Tags still identify uniqueness for the given origin.
 
-  stream << !!tag.size();
+  stream << base::IntToString(!tag.empty());
   if (!tag.size()) {
-    stream << render_process_id_;
+    stream << base::IntToString(render_process_id_);
     stream << kSeparator;
 
-    stream << non_persistent_notification_id;
+    stream << base::IntToString(non_persistent_notification_id);
   } else {
     stream << tag;
   }
 
   return stream.str();
 }
 
 }  // namespace content