Make some editing/selection functions accessible to c/b/renderer_host/

content/browser/renderer_host/ime_adapter_android.cc

Index: content/browser/renderer_host/ime_adapter_android.cc
diff --git a/content/browser/renderer_host/ime_adapter_android.cc b/content/browser/renderer_host/ime_adapter_android.cc
index ac820f5765c3a7bf214293e8271e7bba7951f972..c0c16ed96ddb5881225b82af30535c71882aac43 100644
--- a/content/browser/renderer_host/ime_adapter_android.cc
+++ b/content/browser/renderer_host/ime_adapter_android.cc
@@ -18,6 +18,7 @@
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
+#include "content/browser/renderer_host/render_widget_host_delegate.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 #include "content/common/frame_messages.h"
@@ -282,21 +283,24 @@ void ImeAdapterAndroid::SelectAll(JNIEnv* env, jobject) {
 }
 
 void ImeAdapterAndroid::Cut(JNIEnv* env, jobject) {
-  WebContents* wc = GetWebContents();
-  if (wc)
-    wc->Cut();
+  RenderWidgetHostImpl* rwh = GetRenderWidgetHostImpl();
+  RenderWidgetHostDelegate* delegate = rwh ? rwh->delegate() : nullptr;
+  if (delegate)
+    delegate->Cut();
 }
 
 void ImeAdapterAndroid::Copy(JNIEnv* env, jobject) {
-  WebContents* wc = GetWebContents();
-  if (wc)
-    wc->Copy();
+  RenderWidgetHostImpl* rwh = GetRenderWidgetHostImpl();
+  RenderWidgetHostDelegate* delegate = rwh ? rwh->delegate() : nullptr;
+  if (delegate)
+    delegate->Copy();
 }
 
 void ImeAdapterAndroid::Paste(JNIEnv* env, jobject) {
-  WebContents* wc = GetWebContents();
-  if (wc)
-    wc->Paste();
+  RenderWidgetHostImpl* rwh = GetRenderWidgetHostImpl();
+  RenderWidgetHostDelegate* delegate = rwh ? rwh->delegate() : nullptr;
+  if (delegate)
+    delegate->Paste();
 }
 
 void ImeAdapterAndroid::ResetImeAdapter(JNIEnv* env, jobject) {