Move IME related functions from WebFrame to WebLocalFrame

content/renderer/text_input_client_observer.cc

 // 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.
 
 #include "content/renderer/text_input_client_observer.h"
 
 #include <stddef.h>
 
 #include <memory>
 
@@ skipping 69 matching lines @@
 }
 
 void TextInputClientObserver::OnFirstRectForCharacterRange(gfx::Range range) {
   gfx::Rect rect;
 #if defined(ENABLE_PLUGINS)
   if (render_view_impl_->GetFocusedPepperPlugin()) {
     rect = render_view_impl_->GetFocusedPepperPlugin()->GetCaretBounds();
   } else
 #endif
   {
-    blink::WebFrame* frame = webview()->focusedFrame();
-    if (frame) {
-      blink::WebRect web_rect;
-      frame->firstRectForCharacterRange(range.start(), range.length(),
-                                        web_rect);
-      rect = web_rect;
-    }
+    blink::WebLocalFrame* frame = webview()->focusedFrame();
+    blink::WebRect web_rect;
+    frame->firstRectForCharacterRange(range.start(), range.length(), web_rect);
+    rect = web_rect;
   }
   Send(new TextInputClientReplyMsg_GotFirstRectForRange(routing_id(), rect));
 }
 
 void TextInputClientObserver::OnStringForRange(gfx::Range range) {
 #if defined(OS_MACOSX)
   blink::WebPoint baselinePoint;
   NSAttributedString* string = nil;
-  blink::WebLocalFrame* frame = webview()->focusedFrame()->toWebLocalFrame();
-  if (frame) {
-    string = blink::WebSubstringUtil::attributedSubstringInRange(
-        frame, range.start(), range.length(), &baselinePoint);
-  }
+  blink::WebLocalFrame* frame = webview()->focusedFrame();
+  string = blink::WebSubstringUtil::attributedSubstringInRange(
+      frame, range.start(), range.length(), &baselinePoint);
   std::unique_ptr<const mac::AttributedStringCoder::EncodedString> encoded(
       mac::AttributedStringCoder::Encode(string));
   Send(new TextInputClientReplyMsg_GotStringForRange(routing_id(),
       *encoded.get(), baselinePoint));
 #else
   NOTIMPLEMENTED();
 #endif
 }
 
 }  // namespace content