[Android] Upstream the WebView find-in-page API implementation.

android_webview/native/aw_contents.h

 // Copyright (c) 2012 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 ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_H_
 #define ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_H_
 
 #include <jni.h>
 #include <string>
 
+#include "android_webview/browser/find_helper.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/android/jni_helper.h"
 #include "base/memory/scoped_ptr.h"
 #include "content/public/browser/javascript_dialogs.h"
 
 class TabContents;
 
 namespace content {
 class WebContents;
 }
 
 namespace android_webview {
 
 class AwContentsContainer;
 class AwRenderViewHostExt;
 class AwWebContentsDelegate;
 
 // Native side of java-class of same name.
 // Provides the ownership of and access to browser components required for
 // WebView functionality; analogous to chrome's TabContents, but with a
 // level of indirection provided by the AwContentsContainer abstraction.
-class AwContents {
+class AwContents : public FindHelper::Listener {
  public:
   // Returns the AwContents instance associated with |web_contents|, or NULL.
   static AwContents* FromWebContents(content::WebContents* web_contents);
 
   AwContents(JNIEnv* env,
              jobject obj,
              jobject web_contents_delegate,
              bool private_browsing);
-  ~AwContents();
+  virtual ~AwContents();
 
   void RunJavaScriptDialog(
       content::JavaScriptMessageType message_type,
       const GURL& origin_url,
       const string16& message_text,
       const string16& default_prompt_text,
       const base::android::ScopedJavaLocalRef<jobject>& js_result);
 
   void RunBeforeUnloadDialog(
       const GURL& origin_url,
       const string16& message_text,
       const base::android::ScopedJavaLocalRef<jobject>& js_result);
 
   // |handler| is an instance of
   // org.chromium.android_webview.AwHttpAuthHandler.
   void onReceivedHttpAuthRequest(const base::android::JavaRef<jobject>& handler,
                                  const std::string& host,
                                  const std::string& realm);
 
   // Methods called from Java.
   jint GetWebContents(JNIEnv* env, jobject obj);
   void Destroy(JNIEnv* env, jobject obj);
   void DocumentHasImages(JNIEnv* env, jobject obj, jobject message);
   void GenerateMHTML(JNIEnv* env, jobject obj, jstring jpath, jobject callback);
   void SetIoThreadClient(JNIEnv* env, jobject obj, jobject client);
 
+  // Find-in-page API and related methods.
+  jint FindAllSync(JNIEnv* env, jobject obj, jstring search_string);
+  void FindAllAsync(JNIEnv* env, jobject obj, jstring search_string);
+  void FindNext(JNIEnv* env, jobject obj, jboolean forward);
+  void ClearMatches(JNIEnv* env, jobject obj);
+
+  FindHelper* GetFindHelper();
+
+  // FindHelper::Listener implementation.
+  virtual void OnFindResultReceived(int active_ordinal,
+                                    int match_count,
+                                    bool finished) OVERRIDE;
  private:
   JavaObjectWeakGlobalRef java_ref_;
   scoped_ptr<AwContentsContainer> contents_container_;
   scoped_ptr<AwWebContentsDelegate> web_contents_delegate_;
   scoped_ptr<AwRenderViewHostExt> render_view_host_ext_;
+  scoped_ptr<FindHelper> find_helper_;
 
   DISALLOW_COPY_AND_ASSIGN(AwContents);
 };
 
 bool RegisterAwContents(JNIEnv* env);
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_NATIVE_AW_CONTENTS_H_