Allow test runner to run a callback when finishing a spellcheck request

components/test_runner/spell_check_client.h

Index: components/test_runner/spell_check_client.h
diff --git a/components/test_runner/spell_check_client.h b/components/test_runner/spell_check_client.h
index af23e133f4ef0f11e083ce28e51c4befaeab94ce..cb0d7abc8a2b39c3f61b1ce3071d0201ea113ccb 100644
--- a/components/test_runner/spell_check_client.h
+++ b/components/test_runner/spell_check_client.h
@@ -13,6 +13,7 @@
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/platform/WebVector.h"
 #include "third_party/WebKit/public/web/WebSpellCheckClient.h"
+#include "v8/include/v8.h"
 
 namespace blink {
 class WebTextCheckingCompletion;
@@ -31,6 +32,14 @@ class SpellCheckClient : public blink::WebSpellCheckClient {
   void SetDelegate(WebTestDelegate* delegate);
   void SetEnabled(bool enabled);
 
+  // Sets a callback that will be invoked after each request is revoled.
+  void SetSpellCheckResolvedCallback(v8::Local<v8::Function> callback);
+
+  // Remove the above callback. Beware: don't call it inside the callback.
+  void RemoveSpellCheckResolvedCallback();
+
+  void Reset();
+
   // blink::WebSpellCheckClient implementation.
   void spellCheck(
       const blink::WebString& text,
@@ -47,6 +56,8 @@ class SpellCheckClient : public blink::WebSpellCheckClient {
  private:
   void FinishLastTextCheck();
 
+  void RequestResolved();
+
   // Do not perform any checking when |enabled_ == false|.
   // Tests related to spell checking should enable it manually.
   bool enabled_ = false;
@@ -57,6 +68,8 @@ class SpellCheckClient : public blink::WebSpellCheckClient {
   blink::WebString last_requested_text_check_string_;
   blink::WebTextCheckingCompletion* last_requested_text_checking_completion_;
 
+  v8::Persistent<v8::Function> resolved_callback_;
+
   TestRunner* test_runner_;
   WebTestDelegate* delegate_;