Move textual replacement to WebContents.

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index 7c8342b37ed80245abf6df3f998ed5746c91cdad..7cc6087e3d5dcdb6fcc77dac18f17fe998ef12eb 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -577,6 +577,8 @@ bool RenderFrameImpl::OnMessageReceived(const IPC::Message& msg) {
     IPC_MESSAGE_HANDLER(InputMsg_SelectAll, OnSelectAll)
     IPC_MESSAGE_HANDLER(InputMsg_SelectRange, OnSelectRange)
     IPC_MESSAGE_HANDLER(InputMsg_Unselect, OnUnselect)
+    IPC_MESSAGE_HANDLER(InputMsg_Replace, OnReplace)
+    IPC_MESSAGE_HANDLER(InputMsg_ReplaceMisspelling, OnReplaceMisspelling)
     IPC_MESSAGE_HANDLER(FrameMsg_CSSInsertRequest, OnCSSInsertRequest)
     IPC_MESSAGE_HANDLER(FrameMsg_JavaScriptExecuteRequest,
                         OnJavaScriptExecuteRequest)
@@ -993,6 +995,20 @@ void RenderFrameImpl::OnUnselect() {
   frame_->executeCommand(WebString::fromUTF8("Unselect"), GetFocusedElement());
 }
 
+void RenderFrameImpl::OnReplace(const base::string16& text) {
+  if (!frame_->hasSelection())
+    frame_->selectWordAroundCaret();
+
+  frame_->replaceSelection(text);
+}
+
+void RenderFrameImpl::OnReplaceMisspelling(const base::string16& text) {
+  if (!frame_->hasSelection())
+    return;
+
+  frame_->replaceMisspelledRange(text);
+}
+
 void RenderFrameImpl::OnCSSInsertRequest(const std::string& css) {
   frame_->document().insertStyleSheet(WebString::fromUTF8(css));
 }