Add drag and drop support for custom and html data types on Aura

Also unifies OSExchangeData::CustomFormat and Clipboard::FormatType on Aura so
we don't need two separate code paths and mime type lists for getting specific
custom formats.

Note that this means that on some platforms CustomFormat has a dtor (since it
can hold, eg. a std::string), so we can no longer use static/global
CustomFormat variables.  In the two places we were doing that I switched to use
CR_DEFINE_STATIC_LOCAL to allow the static to leak, exactly as we're already
doing for each implementation of Clipboard::Get*FormatType().

BUG=118416
TEST=See bug - no automated tests exist for any of this yet :-(


Review URL: http://codereview.chromium.org/9770001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@127866 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 7 insertions, 0 deletions

diff --git a/ui/base/clipboard/clipboard.h b/ui/base/clipboard/clipboard.h
index 5020882..a268512 100644
--- a/ui/base/clipboard/clipboard.h
+++ b/ui/base/clipboard/clipboard.h
@@ -65,6 +65,13 @@ class UI_EXPORT Clipboard : NON_EXPORTED_BASE(public base::ThreadChecker) {
     std::string Serialize() const;
     static FormatType Deserialize(const std::string& serialization);
 
+    // FormatType can be used as the key in a map on some platforms.
+#if defined(OS_WIN) || defined(USE_AURA)
+    bool operator<(const FormatType& other) const {
+      return data_ < other.data_;
+    }
+#endif
+
    private:
     friend class Clipboard;