Few changes to the NTP remove thumbnails:

- some minor string changes
- there is now a Cancel button next to the Done button to restore the thumbnails removed during the current editing session
- link and favico are opacified as well in remove mode
- now using a dictionary instead of a list to store the URL blacklist for faster access
- now storing URL hashes instead of URLs (for privacy and also because the DictionaryValue breaks down keys on . characters)

BUG=None
TEST=Make sure removing thumbnails works as expected. Start removing thumbnails then click Cancel, verify that the thumbnails just removed are restored.
Review URL: http://codereview.chromium.org/69007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@13723 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 5 insertions, 2 deletions

diff --git a/base/values.h b/base/values.h
index cad1311..fa5b1017 100644
--- a/base/values.h
+++ b/base/values.h
@@ -204,6 +204,9 @@ class DictionaryValue : public Value {
   // Returns true if the current dictionary has a value for the given key.
   bool HasKey(const std::wstring& key) const;
 
+  // Returns the number of Values in this dictionary.
+  size_t GetSize() const { return dictionary_.size(); }
+
   // Clears any current contents of this dictionary.
   void Clear();
 
@@ -214,8 +217,8 @@ class DictionaryValue : public Value {
   // If the key at any step of the way doesn't exist, or exists but isn't
   // a DictionaryValue, a new DictionaryValue will be created and attached
   // to the path in that location.
-  // Note that the dictionary takes ownership of the value
-  // referenced by in_value.
+  // Note that the dictionary takes ownership of the value referenced by
+  // |in_value|.
   bool Set(const std::wstring& path, Value* in_value);
 
   // Convenience forms of Set().  These methods will replace any existing