[Contextual Search] Use Mojo API for Quick Answers.

chrome/browser/android/contextualsearch/contextual_search_manager.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_MANAGER_H_
 #define CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_MANAGER_H_
 
 #include <stddef.h>
 
 #include "base/android/jni_android.h"
 #include "base/macros.h"
 #include "base/task/cancelable_task_tracker.h"
 #include "chrome/browser/android/contextualsearch/contextual_search_context.h"
 #include "chrome/browser/android/contextualsearch/contextual_search_delegate.h"
+#include "components/contextual_search/browser/contextual_search_js_api_handler.h"
 
 // Manages the native extraction and request logic for Contextual Search,
 // and interacts with the Java ContextualSearchManager for UX.
 // Most of the work is done by the associated ContextualSearchDelegate.
-class ContextualSearchManager {
+class ContextualSearchManager
+    : public contextual_search::ContextualSearchJsApiHandler {
  public:
   // Constructs a native manager associated with the Java manager.
   ContextualSearchManager(JNIEnv* env, jobject obj);
-  virtual ~ContextualSearchManager();
+  ~ContextualSearchManager() override;
 
   // Called by the Java ContextualSearchManager when it is being destroyed.
   void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
 
   // Starts the request to get the search terms to use for the given selection,
   // by accessing our server with the content of the page (from the given
   // content view core object).
   // Any outstanding server requests are canceled.
   // When the server responds with the search term, the Java object is notified
   // by
@@ skipping 19 matching lines @@
   // Gets the target language for translation purposes.
   base::android::ScopedJavaLocalRef<jstring> GetTargetLanguage(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& obj);
 
   // Gets the accept-languages preference string.
   base::android::ScopedJavaLocalRef<jstring> GetAcceptLanguages(
       JNIEnv* env,
       const base::android::JavaParamRef<jobject>& obj);
 
+  // Enables the Contextual Search JS API for the given |ContentViewCore|.
+  void AddViewForContextualSearchJsApi(JNIEnv* env,

[mdjones, 2016/01/09 00:59:38]

I would consider renaming to something like
"enableJSApiFor[ContentViewCore|Page](...)" as the ContentViewCore view isn't
really being added to anything.

[Donn Denman, 2016/01/11 20:31:34]

Done.

+                                     jobject obj,
+                                     jobject j_overlay_content_view_core);
+
+  // ContextualSearchJsApiHandler overrides:
+  void SetCaption(std::string caption, bool does_answer) override;
+
  private:
   void OnSearchTermResolutionResponse(
       const ResolvedSearchTerm& resolved_search_term);
 
   // Calls back to Java with the surrounding text to be displayed.
   void OnSurroundingTextAvailable(const std::string& after_text);
 
   // Calls back to Java with notification for Icing selection.
   void OnIcingSelectionAvailable(const std::string& encoding,
                                  const base::string16& surrounding_text,
                                  size_t start_offset,
                                  size_t end_offset);
 
   // Our global reference to the Java ContextualSearchManager.
   base::android::ScopedJavaGlobalRef<jobject> java_manager_;
 
   // The delegate we're using the do the real work.
   scoped_ptr<ContextualSearchDelegate> delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(ContextualSearchManager);
 };
 
 bool RegisterContextualSearchManager(JNIEnv* env);
 
 #endif  // CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_CONTEXTUAL_SEARCH_MANAGER_H_