[Android] Use WebContents text manipulation methods directly

content/browser/web_contents/web_contents_android.h

 // Copyright 2013 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 CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_ANDROID_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_ANDROID_H_
 
 #include <jni.h>
 
 #include "base/android/scoped_java_ref.h"
@@ skipping 28 matching lines @@
   // Methods called from Java
   base::android::ScopedJavaLocalRef<jstring> GetTitle(JNIEnv* env,
                                                       jobject obj) const;
   base::android::ScopedJavaLocalRef<jstring> GetVisibleURL(JNIEnv* env,
                                                            jobject obj) const;
 
   bool IsLoading(JNIEnv* env, jobject obj) const;
   bool IsLoadingToDifferentDocument(JNIEnv* env, jobject obj) const;
 
   void Stop(JNIEnv* env, jobject obj);
+  void Cut(JNIEnv* env, jobject obj);
+  void Copy(JNIEnv* env, jobject obj);
+  void Paste(JNIEnv* env, jobject obj);
+  void SelectAll(JNIEnv* env, jobject obj);
+  void Unselect(JNIEnv* env, jobject obj);
   jint GetBackgroundColor(JNIEnv* env, jobject obj);
   base::android::ScopedJavaLocalRef<jstring> GetURL(JNIEnv* env, jobject) const;
   base::android::ScopedJavaLocalRef<jstring> GetLastCommittedURL(JNIEnv* env,
                                                                  jobject) const;
   jboolean IsIncognito(JNIEnv* env, jobject obj);
 
   void ResumeLoadingCreatedWebContents(JNIEnv* env, jobject obj);
 
   void OnHide(JNIEnv* env, jobject obj);
   void OnShow(JNIEnv* env, jobject obj);
@@ skipping 40 matching lines @@
   base::android::ScopedJavaGlobalRef<jobject> obj_;
 
   base::WeakPtrFactory<WebContentsAndroid> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsAndroid);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_ANDROID_H_