Add GetSequenceNumber function to PPB_Flash_Clipboard

ppapi/cpp/private/flash_clipboard.cc

Index: ppapi/cpp/private/flash_clipboard.cc
diff --git a/ppapi/cpp/private/flash_clipboard.cc b/ppapi/cpp/private/flash_clipboard.cc
index c63f747bcc073338c4540dde8efc4e81f8fa0562..77e68ba3ad1dc45abd9561b9fa823b76a8c0ed92 100644
--- a/ppapi/cpp/private/flash_clipboard.cc
+++ b/ppapi/cpp/private/flash_clipboard.cc
@@ -24,13 +24,18 @@ template <> const char* interface_name<PPB_Flash_Clipboard_5_0>() {
   return PPB_FLASH_CLIPBOARD_INTERFACE_5_0;
 }
 
+template <> const char* interface_name<PPB_Flash_Clipboard_5_1>() {
+  return PPB_FLASH_CLIPBOARD_INTERFACE_5_1;
+}
+
 }  // namespace
 
 namespace flash {
 
 // static
 bool Clipboard::IsAvailable() {
-  return has_interface<PPB_Flash_Clipboard_5_0>() ||
+  return has_interface<PPB_Flash_Clipboard_5_1>() ||
+      has_interface<PPB_Flash_Clipboard_5_0>() ||
       has_interface<PPB_Flash_Clipboard_4_0>() ;
 }
 
@@ -38,7 +43,10 @@ bool Clipboard::IsAvailable() {
 uint32_t Clipboard::RegisterCustomFormat(const InstanceHandle& instance,
                                          const std::string& format_name) {
   uint32_t rv = PP_FLASH_CLIPBOARD_FORMAT_INVALID;
-  if (has_interface<PPB_Flash_Clipboard_5_0>()) {
+  if (has_interface<PPB_Flash_Clipboard_5_1>()) {
+    rv = get_interface<PPB_Flash_Clipboard_5_1>()->RegisterCustomFormat(
+        instance.pp_instance(), format_name.c_str());
+  } else if (has_interface<PPB_Flash_Clipboard_5_0>()) {
     rv = get_interface<PPB_Flash_Clipboard_5_0>()->RegisterCustomFormat(
         instance.pp_instance(), format_name.c_str());
   }
@@ -50,7 +58,10 @@ bool Clipboard::IsFormatAvailable(const InstanceHandle& instance,
                                   PP_Flash_Clipboard_Type clipboard_type,
                                   uint32_t format) {
   bool rv = false;
-  if (has_interface<PPB_Flash_Clipboard_5_0>()) {
+  if (has_interface<PPB_Flash_Clipboard_5_1>()) {
+    rv = PP_ToBool(get_interface<PPB_Flash_Clipboard_5_1>()->IsFormatAvailable(
+        instance.pp_instance(), clipboard_type, format));
+  } else if (has_interface<PPB_Flash_Clipboard_5_0>()) {
     rv = PP_ToBool(get_interface<PPB_Flash_Clipboard_5_0>()->IsFormatAvailable(
         instance.pp_instance(), clipboard_type, format));
   } else if (has_interface<PPB_Flash_Clipboard_4_0>()) {
@@ -68,7 +79,14 @@ bool Clipboard::ReadData(
     uint32_t format,
     Var* out) {
   bool rv = false;
-  if (has_interface<PPB_Flash_Clipboard_5_0>()) {
+  if (has_interface<PPB_Flash_Clipboard_5_1>()) {
+    PP_Var result = get_interface<PPB_Flash_Clipboard_5_1>()->ReadData(
+        instance.pp_instance(),
+        clipboard_type,
+        format);
+    *out = Var(PASS_REF, result);
+    rv = true;
+  } else if (has_interface<PPB_Flash_Clipboard_5_0>()) {
     PP_Var result = get_interface<PPB_Flash_Clipboard_5_0>()->ReadData(
         instance.pp_instance(),
         clipboard_type,
@@ -96,7 +114,29 @@ bool Clipboard::WriteData(
     return false;
 
   bool rv = false;
-  if (has_interface<PPB_Flash_Clipboard_5_0>()) {
+  if (has_interface<PPB_Flash_Clipboard_5_1>()) {
+    // Convert vector of pp::Var into a vector of PP_Var.
+    std::vector<PP_Var> data_items_vector;
+    for (uint32_t i = 0; i < data_items.size(); ++i)
+      data_items_vector.push_back(data_items[i].pp_var());
+
+    // Ensure that we don't dereference the memory in empty vectors. We still
+    // want to call WriteData because it has the effect of clearing the
+    // clipboard.
+    const uint32_t* formats_ptr(NULL);
+    const PP_Var* data_items_ptr(NULL);
+    if (data_items.size() > 0) {
+      formats_ptr = &formats[0];
+      data_items_ptr = &data_items_vector[0];
+    }
+
+    rv = (get_interface<PPB_Flash_Clipboard_5_1>()->WriteData(
+        instance.pp_instance(),
+        clipboard_type,
+        data_items.size(),
+        formats_ptr,
+            data_items_ptr) == PP_OK);
+  } else if (has_interface<PPB_Flash_Clipboard_5_0>()) {
     // Convert vector of pp::Var into a vector of PP_Var.
     std::vector<PP_Var> data_items_vector;
     for (uint32_t i = 0; i < data_items.size(); ++i)
@@ -148,5 +188,17 @@ bool Clipboard::WriteData(
   return rv;
 }
 
+// static
+bool Clipboard::GetSequenceNumber(const InstanceHandle& instance,
+                                  PP_Flash_Clipboard_Type clipboard_type,
+                                  uint64_t* sequence_number) {
+  if (has_interface<PPB_Flash_Clipboard_5_1>()) {
+    return PP_ToBool(
+        get_interface<PPB_Flash_Clipboard_5_1>()->GetSequenceNumber(
+            instance.pp_instance(), clipboard_type, sequence_number));
+  }
+  return false;
+}
+
 }  // namespace flash
 }  // namespace pp