Remove WebContents::InsertCSS since it is unused

content/renderer/render_frame_impl.cc

 // Copyright 2013 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/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 1505 matching lines @@
     IPC_MESSAGE_HANDLER(FrameMsg_CopyImageAt, OnCopyImageAt)
     IPC_MESSAGE_HANDLER(FrameMsg_SaveImageAt, OnSaveImageAt)
     IPC_MESSAGE_HANDLER(InputMsg_ExtendSelectionAndDelete,
                         OnExtendSelectionAndDelete)
     IPC_MESSAGE_HANDLER(InputMsg_SetCompositionFromExistingText,
                         OnSetCompositionFromExistingText)
     IPC_MESSAGE_HANDLER(InputMsg_SetEditableSelectionOffsets,
                         OnSetEditableSelectionOffsets)
     IPC_MESSAGE_HANDLER(InputMsg_ExecuteNoValueEditCommand,
                         OnExecuteNoValueEditCommand)
-    IPC_MESSAGE_HANDLER(FrameMsg_CSSInsertRequest, OnCSSInsertRequest)
     IPC_MESSAGE_HANDLER(FrameMsg_AddMessageToConsole, OnAddMessageToConsole)
     IPC_MESSAGE_HANDLER(FrameMsg_JavaScriptExecuteRequest,
                         OnJavaScriptExecuteRequest)
     IPC_MESSAGE_HANDLER(FrameMsg_JavaScriptExecuteRequestForTests,
                         OnJavaScriptExecuteRequestForTests)
     IPC_MESSAGE_HANDLER(FrameMsg_JavaScriptExecuteRequestInIsolatedWorld,
                         OnJavaScriptExecuteRequestInIsolatedWorld)
     IPC_MESSAGE_HANDLER(FrameMsg_VisualStateRequest,
                         OnVisualStateRequest)
     IPC_MESSAGE_HANDLER(FrameMsg_Reload, OnReload)
@@ skipping 371 matching lines @@
 }
 
 void RenderFrameImpl::OnCopyImageAt(int x, int y) {
   frame_->copyImageAt(WebPoint(x, y));
 }
 
 void RenderFrameImpl::OnSaveImageAt(int x, int y) {
   frame_->saveImageAt(WebPoint(x, y));
 }
 
-void RenderFrameImpl::OnCSSInsertRequest(const std::string& css) {
-  frame_->document().insertStyleSheet(WebString::fromUTF8(css));
-}
-
 void RenderFrameImpl::OnAddMessageToConsole(ConsoleMessageLevel level,
                                             const std::string& message) {
   AddMessageToConsole(level, message);
 }
 
 void RenderFrameImpl::OnJavaScriptExecuteRequest(
     const base::string16& jscript,
     int id,
     bool notify_result) {
   TRACE_EVENT_INSTANT0("test_tracing", "OnJavaScriptExecuteRequest",
@@ skipping 4402 matching lines @@
   // event target. Potentially a Pepper plugin will receive the event.
   // In order to tell whether a plugin gets the last mouse event and which it
   // is, we set |pepper_last_mouse_event_target_| to null here. If a plugin gets
   // the event, it will notify us via DidReceiveMouseEvent() and set itself as
   // |pepper_last_mouse_event_target_|.
   pepper_last_mouse_event_target_ = nullptr;
 #endif
 }
 
 }  // namespace content