Use toolbutton for clear search term

tools/editor/project_manager.cpp

@@ -1023,6 +1023,14 @@ void ProjectListFilter::_filter_option_selected(int p_idx) {
 	}
 }
 
+void ProjectListFilter::_notification(int p_what) {
+	switch(p_what) {
+		case NOTIFICATION_ENTER_SCENE: {
+			clear_search_button->set_icon(get_icon("CloseHover","EditorIcons"));
+		} break;
+	}
+}
+
 void ProjectListFilter::_bind_methods() {
 
 	ObjectTypeDB::bind_method(_MD("_command"),&ProjectListFilter::_command);
@@ -1049,8 +1057,7 @@ ProjectListFilter::ProjectListFilter() {
 	search_box->set_h_size_flags(SIZE_EXPAND_FILL);
 	add_child(search_box);
 
-	clear_search_button = memnew( Button );
-	clear_search_button->set_text("clear");
+	clear_search_button = memnew( ToolButton );
 	clear_search_button->connect("pressed",this,"_command",make_binds(CMD_CLEAR_FILTER));
 	add_child(clear_search_button);
 

tools/editor/project_manager.h

@@ -33,6 +33,7 @@
 #include "scene/gui/tree.h"
 #include "scene/gui/scroll_container.h"
 #include "scene/gui/file_dialog.h"
+#include "scene/gui/tool_button.h"
 
 class NewProjectDialog;
 class ProjectListFilter;
@@ -104,7 +105,7 @@ private:
 
 	OptionButton *filter_option;
 	LineEdit *search_box;
-	Button *clear_search_button;
+	ToolButton *clear_search_button;
 
 	enum FilterOption {
 		FILTER_NAME,
@@ -118,7 +119,7 @@ private:
 	void _filter_option_selected(int p_idx);
 
 protected:
-
+	void _notification(int p_what);
 	static void _bind_methods();
 
 public: