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

android_webview/native/aw_contents.h

Index: android_webview/native/aw_contents.h
diff --git a/android_webview/native/aw_contents.h b/android_webview/native/aw_contents.h
index 472075ea58ed735a11eb6cacf44b8ee7eb08ce9e..556f50546f1b8b46a2202a1f2f05ddab437c8d73 100644
--- a/android_webview/native/aw_contents.h
+++ b/android_webview/native/aw_contents.h
@@ -8,6 +8,7 @@
 #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"
@@ -29,7 +30,7 @@ class AwWebContentsDelegate;
 // 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);
@@ -38,7 +39,7 @@ class AwContents {
              jobject obj,
              jobject web_contents_delegate,
              bool private_browsing);
-  ~AwContents();
+  virtual ~AwContents();
 
   void RunJavaScriptDialog(
       content::JavaScriptMessageType message_type,
@@ -65,11 +66,24 @@ class AwContents {
   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);
 };