supersize: Add symbol.template_name, and strip <>s from symbol.name

tools/binary_size/libsupersize/canned_queries.py

Index: tools/binary_size/libsupersize/canned_queries.py
diff --git a/tools/binary_size/libsupersize/canned_queries.py b/tools/binary_size/libsupersize/canned_queries.py
index 84a0612f08a18c1de7999c9889c9ff980e819f05..0b8a23183c44e4e1272e58f0b0ab9800263f482e 100644
--- a/tools/binary_size/libsupersize/canned_queries.py
+++ b/tools/binary_size/libsupersize/canned_queries.py
@@ -139,3 +139,9 @@ class CannedQueries(object):
   def CategorizeByChromeComponent(self, symbols=None):
     """Groups symbols by component using predefined queries."""
     return _CategorizeByChromeComponent(self._SymbolsArg(symbols))
+
+  def TemplatesByName(self, symbols=None, depth=0):
+    """Lists C++ templates grouped by name."""
+    symbols = self._SymbolsArg(symbols)
+    # TODO(agrieve): Might be nice to recursively GroupedByName() on these.
+    return symbols.WhereIsTemplate().GroupedByName(depth).Clustered().Sorted()