Support for [Clamp] and [EnforceRange] to IDL dictionary.

Source/bindings/templates/dictionary_v8.cpp

Index: Source/bindings/templates/dictionary_v8.cpp
diff --git a/Source/bindings/templates/dictionary_v8.cpp b/Source/bindings/templates/dictionary_v8.cpp
index 438268b6d4edece589712b62d1dbc5e3d3635d79..a5a47a2324c9236e03a5b3c04e90a32d899dc043 100644
--- a/Source/bindings/templates/dictionary_v8.cpp
+++ b/Source/bindings/templates/dictionary_v8.cpp
@@ -29,8 +29,9 @@ void {{v8_class}}::toImpl(v8::Isolate* isolate, v8::Handle<v8::Value> v8Value, {
     // Dictionary/DictionaryHelper to something that uses ExceptionState.
     v8::TryCatch block;

[bashi, 2014/11/17 02:20:45]

I think you can fix this FIXME in this CL or a follow-up CL:)

v8_value_to_local_cpp_value can handle ExceptionState.

[zino, 2014/11/19 18:12:19]

I'm trying to fix this but I'm not familiar with this part.
How can I handle the ExceptionState without v8::TryCatch.
Please see Patch Set 4 (not Set 5) and
https://storage.googleapis.com/chromium-layout-test-archives/linux_blink_rel/...

[bashi, 2014/11/20 02:18:02]

Hmm, let me investigate it later. I think I can fix it. This CL shouldn't affect
custom elements tests so please leave this as is. Sorry for the noise.

     {% for member in members %}
-    {{member.cpp_type}} {{member.name}};
-    if (DictionaryHelper::getWithUndefinedOrNullCheck(dictionary, "{{member.name}}", {{member.name}})) {
+    v8::Local<v8::Value> {{member.name}}Value;
+    if (dictionary.getKey("{{member.name}}", {{member.name}}Value) && !isUndefinedOrNull({{member.name}}Value)) {

[haraken, 2014/11/17 00:22:19]

Is getWithUndefinedOrNullCheck still needed? It's confusing to have two ways to
get a dictionary value: getWithUndefinedOrNullCheck and 'getKey &&
isUndefinedOrNull'?

[bashi, 2014/11/17 02:20:45]

Also, we can remove Dictionary here if you use v8_value_to_local_cpp_value.
Dictionary::getKey() is just a wrapper of getting a property from a V8 object.
You can add a static function instead (which will take v8::Local<v8::Object> and
String, returning a v8::Local<v8::Value>.

[zino, 2014/11/19 18:12:19]

Done.

+        {{member.v8_value_to_local_cpp_value}};
     {% if member.enum_validation_expression %}
         String string = {{member.name}};
         if (!({{member.enum_validation_expression}})) {