Revert of Let ImeAdapterAndroid have the same lifecycle as its Java peer

content/browser/android/ime_adapter_android.h

Index: content/browser/android/ime_adapter_android.h
diff --git a/content/browser/android/ime_adapter_android.h b/content/browser/android/ime_adapter_android.h
deleted file mode 100644
index d230f265de19772ad587fe6848490e4dc23d5146..0000000000000000000000000000000000000000
--- a/content/browser/android/ime_adapter_android.h
+++ /dev/null
@@ -1,127 +0,0 @@
-// 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 CONTENT_BROWSER_ANDROID_IME_ADAPTER_ANDROID_H_
-#define CONTENT_BROWSER_ANDROID_IME_ADAPTER_ANDROID_H_
-
-#include <jni.h>
-
-#include <vector>
-
-#include "base/android/jni_weak_ref.h"
-#include "base/strings/string16.h"
-#include "content/common/content_export.h"
-#include "content/public/browser/web_contents_observer.h"
-#include "ui/gfx/geometry/rect_f.h"
-
-namespace blink {
-
-struct WebCompositionUnderline;
-
-}  // namespace blink
-
-namespace content {
-
-class RenderFrameHost;
-class RenderWidgetHostImpl;
-class RenderWidgetHostViewAndroid;
-
-// This class is in charge of dispatching key events from the java side
-// and forward to renderer along with input method results via
-// corresponding host view.
-// Ownership of these objects remains on the native side (see
-// RenderWidgetHostViewAndroid).
-class CONTENT_EXPORT ImeAdapterAndroid : public WebContentsObserver {
- public:
-  ImeAdapterAndroid(JNIEnv* env,
-                    const base::android::JavaParamRef<jobject>& obj,
-                    WebContents* web_contents);
-  ~ImeAdapterAndroid() override;
-
-  // Called from java -> native
-  bool SendKeyEvent(
-      JNIEnv* env,
-      const base::android::JavaParamRef<jobject>&,
-      const base::android::JavaParamRef<jobject>& original_key_event,
-      int type,
-      int modifiers,
-      jlong time_ms,
-      int key_code,
-      int scan_code,
-      bool is_system_key,
-      int unicode_text);
-  void SetComposingText(JNIEnv* env,
-                        const base::android::JavaParamRef<jobject>& obj,
-                        const base::android::JavaParamRef<jobject>& text,
-                        const base::android::JavaParamRef<jstring>& text_str,
-                        int relative_cursor_pos);
-  void CommitText(JNIEnv* env,
-                  const base::android::JavaParamRef<jobject>& obj,
-                  const base::android::JavaParamRef<jobject>& text,
-                  const base::android::JavaParamRef<jstring>& text_str,
-                  int relative_cursor_pos);
-  void FinishComposingText(JNIEnv* env,
-                           const base::android::JavaParamRef<jobject>&);
-  void SetEditableSelectionOffsets(JNIEnv*,
-                                   const base::android::JavaParamRef<jobject>&,
-                                   int start,
-                                   int end);
-  void SetComposingRegion(JNIEnv*,
-                          const base::android::JavaParamRef<jobject>&,
-                          int start,
-                          int end);
-  void DeleteSurroundingText(JNIEnv*,
-                             const base::android::JavaParamRef<jobject>&,
-                             int before,
-                             int after);
-  void DeleteSurroundingTextInCodePoints(
-      JNIEnv*,
-      const base::android::JavaParamRef<jobject>&,
-      int before,
-      int after);
-  void RequestCursorUpdate(JNIEnv*,
-                           const base::android::JavaParamRef<jobject>&,
-                           bool immediateRequest,
-                           bool monitorRequest);
-  bool RequestTextInputStateUpdate(JNIEnv*,
-                                   const base::android::JavaParamRef<jobject>&);
-
-  // Called from native -> java
-  void CancelComposition();
-  void FocusedNodeChanged(bool is_editable_node);
-  void SetCharacterBounds(const std::vector<gfx::RectF>& rects);
-
-  base::android::ScopedJavaLocalRef<jobject> java_ime_adapter_for_testing(
-      JNIEnv* env) {
-    return java_ime_adapter_.get(env);
-  }
-
-  // WebContentsObserver implementation.
-  void RenderViewReady() override;
-  void RenderViewHostChanged(RenderViewHost* old_host,
-                             RenderViewHost* new_host) override;
-  void DidAttachInterstitialPage() override;
-  void DidDetachInterstitialPage() override;
-  void WebContentsDestroyed() override;
-
- private:
-  RenderWidgetHostImpl* GetFocusedWidget();
-  RenderFrameHost* GetFocusedFrame();
-  std::vector<blink::WebCompositionUnderline> GetUnderlinesFromSpans(
-      JNIEnv* env,
-      const base::android::JavaParamRef<jobject>& obj,
-      const base::android::JavaParamRef<jobject>& text,
-      const base::string16& text16);
-  RenderWidgetHostViewAndroid* GetRenderWidgetHostViewAndroid() const;
-  void UpdateRenderProcessConnection(RenderWidgetHostViewAndroid* new_rwhva);
-
-  RenderWidgetHostViewAndroid* rwhva_;
-  JavaObjectWeakGlobalRef java_ime_adapter_;
-};
-
-bool RegisterImeAdapter(JNIEnv* env);
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_ANDROID_IME_ADAPTER_ANDROID_H_