[bindings] Translate all assignments in bindings/templates to use Local<> in place of Handle<>.

Source/bindings/templates/attributes.cpp

 {##############################################################################}
 {% macro attribute_getter(attribute, world_suffix) %}
 {% filter conditional(attribute.conditional_string) %}
 static void {{attribute.name}}AttributeGetter{{world_suffix}}(
 {%- if attribute.is_expose_js_accessors %}
 const v8::FunctionCallbackInfo<v8::Value>& info
 {%- else %}
 const v8::PropertyCallbackInfo<v8::Value>& info
 {%- endif %})
 {
     {% if attribute.is_reflect and not attribute.is_url
           and attribute.idl_type == 'DOMString' and is_node
           and not attribute.is_implemented_in_private_script %}
     {% set cpp_class, v8_class = 'Element', 'V8Element' %}
     {% endif %}
     {# holder #}
     {% if not attribute.is_static %}
-    v8::Handle<v8::Object> holder = info.Holder();
+    v8::Local<v8::Object> holder = info.Holder();
     {% endif %}
     {# impl #}
     {% if attribute.cached_attribute_validation_method %}
-    v8::Handle<v8::String> propertyName = v8AtomicString(info.GetIsolate(), "{{attribute.name}}");
+    v8::Local<v8::String> propertyName = v8AtomicString(info.GetIsolate(), "{{attribute.name}}");
     {{cpp_class}}* impl = {{v8_class}}::toImpl(holder);
     if (!impl->{{attribute.cached_attribute_validation_method}}()) {
-        v8::Handle<v8::Value> v8Value = V8HiddenValue::getHiddenValue(info.GetIsolate(), holder, propertyName);
+        v8::Local<v8::Value> v8Value = V8HiddenValue::getHiddenValue(info.GetIsolate(), holder, propertyName);
         if (!v8Value.IsEmpty()) {
             v8SetReturnValue(info, v8Value);
             return;
         }
     }
     {% elif not attribute.is_static %}
     {{cpp_class}}* impl = {{v8_class}}::toImpl(holder);
     {% endif %}
     {% if interface_name == 'Window' and attribute.idl_type == 'EventHandler' %}
     if (!impl->document())
@@ skipping 44 matching lines @@
         return;
     }
     {% endif %}
     {% if attribute.cached_attribute_validation_method %}
     V8HiddenValue::setHiddenValue(info.GetIsolate(), holder, propertyName, {{attribute.cpp_value_to_v8_value}});
     {% endif %}
     {# v8SetReturnValue #}
     {% if attribute.is_keep_alive_for_gc %}
     if ({{attribute.cpp_value}} && DOMDataStore::setReturnValue{{world_suffix}}(info.GetReturnValue(), {{attribute.cpp_value}}.get()))
         return;
-    v8::Handle<v8::Value> wrapper = toV8({{attribute.cpp_value}}.get(), holder, info.GetIsolate());
+    v8::Local<v8::Value> wrapper = toV8({{attribute.cpp_value}}.get(), holder, info.GetIsolate());
     if (!wrapper.IsEmpty()) {
         V8HiddenValue::setHiddenValue(info.GetIsolate(), holder, v8AtomicString(info.GetIsolate(), "{{attribute.name}}"), wrapper);
         {{attribute.v8_set_return_value}};
     }
     {% elif world_suffix %}
     {{attribute.v8_set_return_value_for_main_world}};
     {% else %}
     {% if attribute.use_output_parameter_for_result %}
     {{attribute.cpp_type}} result;
     {{attribute.cpp_value}};
@@ skipping 104 matching lines @@
 {%- else %}
 v8::Local<v8::Value> v8Value, const v8::PropertyCallbackInfo<void>& info
 {%- endif %})
 {
     {% if attribute.is_reflect and attribute.idl_type == 'DOMString'
           and is_node and not attribute.is_implemented_in_private_script %}
     {% set cpp_class, v8_class = 'Element', 'V8Element' %}
     {% endif %}
     {# Local variables #}
     {% if not attribute.is_static %}
-    v8::Handle<v8::Object> holder = info.Holder();
+    v8::Local<v8::Object> holder = info.Holder();
     {% endif %}
     {% if attribute.has_setter_exception_state %}
     ExceptionState exceptionState(ExceptionState::SetterContext, "{{attribute.name}}", "{{interface_name}}", holder, info.GetIsolate());
     {% endif %}
     {% if attribute.use_output_parameter_for_result %}
     {{attribute.cpp_type}} cppValue;
     {% endif %}
     {# impl #}
     {% if attribute.put_forwards %}
     {{cpp_class}}* proxyImpl = {{v8_class}}::toImpl(holder);
@@ skipping 110 matching lines @@
 
 
 {##############################################################################}
 {% macro attribute_getter_implemented_in_private_script(attribute) %}
 bool {{v8_class}}::PrivateScript::{{attribute.name}}AttributeGetter(LocalFrame* frame, {{cpp_class}}* holderImpl, {{attribute.cpp_type}}* result)
 {
     if (!frame)
         return false;
     v8::HandleScope handleScope(toIsolate(frame));
     ScriptForbiddenScope::AllowUserAgentScript script;
-    v8::Handle<v8::Context> contextInPrivateScript = toV8Context(frame, DOMWrapperWorld::privateScriptIsolatedWorld());
+    v8::Local<v8::Context> contextInPrivateScript = toV8Context(frame, DOMWrapperWorld::privateScriptIsolatedWorld());
     if (contextInPrivateScript.IsEmpty())
         return false;
     ScriptState* scriptState = ScriptState::from(contextInPrivateScript);
     ScriptState* scriptStateInUserScript = ScriptState::forMainWorld(frame);
     if (!scriptState->executionContext())
         return false;
 
     ScriptState::Scope scope(scriptState);
-    v8::Handle<v8::Value> holder = toV8(holderImpl, scriptState->context()->Global(), scriptState->isolate());
+    v8::Local<v8::Value> holder = toV8(holderImpl, scriptState->context()->Global(), scriptState->isolate());
 
     ExceptionState exceptionState(ExceptionState::GetterContext, "{{attribute.name}}", "{{cpp_class}}", scriptState->context()->Global(), scriptState->isolate());
-    v8::Handle<v8::Value> v8Value = PrivateScriptRunner::runDOMAttributeGetter(scriptState, scriptStateInUserScript, "{{cpp_class}}", "{{attribute.name}}", holder);
+    v8::Local<v8::Value> v8Value = PrivateScriptRunner::runDOMAttributeGetter(scriptState, scriptStateInUserScript, "{{cpp_class}}", "{{attribute.name}}", holder);
     if (v8Value.IsEmpty())
         return false;
     {{attribute.private_script_v8_value_to_local_cpp_value}};
     RELEASE_ASSERT(!exceptionState.hadException());
     *result = cppValue;
     return true;
 }
 {% endmacro %}
 
 
 {% macro attribute_setter_implemented_in_private_script(attribute) %}
 bool {{v8_class}}::PrivateScript::{{attribute.name}}AttributeSetter(LocalFrame* frame, {{cpp_class}}* holderImpl, {{attribute.argument_cpp_type}} cppValue)
 {
     if (!frame)
         return false;
     v8::HandleScope handleScope(toIsolate(frame));
     ScriptForbiddenScope::AllowUserAgentScript script;
-    v8::Handle<v8::Context> contextInPrivateScript = toV8Context(frame, DOMWrapperWorld::privateScriptIsolatedWorld());
+    v8::Local<v8::Context> contextInPrivateScript = toV8Context(frame, DOMWrapperWorld::privateScriptIsolatedWorld());
     if (contextInPrivateScript.IsEmpty())
         return false;
     ScriptState* scriptState = ScriptState::from(contextInPrivateScript);
     ScriptState* scriptStateInUserScript = ScriptState::forMainWorld(frame);
     if (!scriptState->executionContext())
         return false;
 
     ScriptState::Scope scope(scriptState);
-    v8::Handle<v8::Value> holder = toV8(holderImpl, scriptState->context()->Global(), scriptState->isolate());
+    v8::Local<v8::Value> holder = toV8(holderImpl, scriptState->context()->Global(), scriptState->isolate());
 
     ExceptionState exceptionState(ExceptionState::SetterContext, "{{attribute.name}}", "{{cpp_class}}", scriptState->context()->Global(), scriptState->isolate());
     return PrivateScriptRunner::runDOMAttributeSetter(scriptState, scriptStateInUserScript, "{{cpp_class}}", "{{attribute.name}}", holder, {{attribute.private_script_cpp_value_to_v8_value}});
 }
 {% endmacro %}
 
 
 {##############################################################################}
 {% macro attribute_configuration(attribute) %}
 {% set getter_callback =
@@ skipping 36 matching lines @@
        access_control,
        property_attribute,
        only_exposed_to_private_script,
    ] %}
 {% if not attribute.is_expose_js_accessors %}
 {% set attribute_configuration_list = attribute_configuration_list
                                     + [on_prototype] %}
 {% endif %}
 {{'{'}}{{attribute_configuration_list | join(', ')}}{{'}'}}
 {%- endmacro %}