Add tests for input.ime.* APIs.

ui/base/ime/dummy_text_input_client.h

Index: ui/base/ime/dummy_text_input_client.h
diff --git a/ui/base/ime/dummy_text_input_client.h b/ui/base/ime/dummy_text_input_client.h
index a1779939e4420c0ed6615b1330a93c6ec7298f8e..68ca13947fedcc6b869122eb1d47db1a9429d93e 100644
--- a/ui/base/ime/dummy_text_input_client.h
+++ b/ui/base/ime/dummy_text_input_client.h
@@ -51,6 +51,8 @@ class DummyTextInputClient : public TextInputClient {
 
   int insert_char_count() const { return insert_char_count_; }
   base::char16 last_insert_char() const { return last_insert_char_; }
+  int insert_text_count() const { return insert_text_count_; }
+  base::string16 last_insert_text() const { return last_insert_text_; }
 
   TextInputType text_input_type_;
 
@@ -58,7 +60,9 @@ class DummyTextInputClient : public TextInputClient {
 
  private:
   int insert_char_count_;
+  int insert_text_count_;
   base::char16 last_insert_char_;
+  base::string16 last_insert_text_;
 };
 
 }  // namespace ui