Revert of [TTS] Gather surrounding text on Tap before any UX.

chrome/browser/android/contextualsearch/search_action.h

-// Copyright 2016 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_SEARCH_ACTION_H_
-#define CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_SEARCH_ACTION_H_
-
-#include <memory>
-
-#include "base/android/jni_android.h"
-#include "base/gtest_prod_util.h"
-#include "base/memory/weak_ptr.h"
-#include "base/strings/string_util.h"
-
-struct ContextualSearchContext;
-
-// Represents the native side of a Java Search Action, which knows how to do a
-// Contextual Search.
-// This is part of the 2016-refactoring (crbug.com/624609,
-// go/cs-refactoring-2016).
-// Gathers text surrounding the selection from the page and makes it accessible
-// to Java.
-// TODO(donnd): add capability to "resolve" the best search term for the section
-// of the page based on a server request or local text analysis.
-class SearchAction : public base::SupportsWeakPtr<SearchAction> {
- public:
-  // Constructs a new Search Action linked to the given Java object.
-  SearchAction(JNIEnv* env, jobject obj);
-  virtual ~SearchAction();
-
-  // Should be called when this native object is no longer needed (calls the
-  // destructor).
-  void Destroy(JNIEnv* env, const base::android::JavaParamRef<jobject>& obj);
-
-  // Requests the text surrounding the selection for the given WebContents Java
-  // object.  The surrounding text will be made available through a call to
-  // |OnSurroundingTextResponse|.
-  void RequestSurroundingText(
-      JNIEnv* env,
-      const base::android::JavaParamRef<jobject>& obj,
-      const base::android::JavaParamRef<jobject>& j_web_contents);
-
-  // Finds and returns the focused word within the current surrounding text.
-  // RequestSurroundingText must be called first and the associated response
-  // received.
-  std::string FindFocusedWord();
-
-  // Returns a sample of the current surrounding text of the given
-  // |sample_length| or shorter if insufficient sample text is available.
-  // RequestSurroundingText must be called first and the associated response
-  // received.
-  std::string GetSampleText(int sample_length);
-
- private:
-  friend class SearchActionTest;
-  FRIEND_TEST_ALL_PREFIXES(SearchActionTest, IsValidCharacterTest);
-  FRIEND_TEST_ALL_PREFIXES(SearchActionTest, FindFocusedWordTest);
-  FRIEND_TEST_ALL_PREFIXES(SearchActionTest, SampleSurroundingsTest);
-
-  // Analyzes the surrounding text and makes it available to the Java
-  // SearchAction object in a call to SearchAction#onSurroundingTextResponse.
-  void OnSurroundingTextResponse(const base::string16& surrounding_text,
-                                 int focus_start,
-                                 int focus_end);
-
-  // Determines if the given character is a valid part of a word to search for.
-  bool IsValidCharacter(int char_code);
-
-  // Testing support
-  SearchAction();
-  void SetContext(std::string surrounding_text, int focus_start, int focus_end);
-
-  // The linked Java object.
-  base::android::ScopedJavaGlobalRef<jobject> java_object_;
-
-  // The current search context, or null.
-  std::shared_ptr<ContextualSearchContext> search_context_;
-
-  DISALLOW_COPY_AND_ASSIGN(SearchAction);
-};
-
-bool RegisterSearchAction(JNIEnv* env);
-
-#endif  // CHROME_BROWSER_ANDROID_CONTEXTUALSEARCH_SEARCH_ACTION_H_