Replace DCHECKs on InserCode and Navigate paths with LOG(ERROR)

ceee/ie/plugin/bho/executor.cc

 // Copyright (c) 2010 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.
 //
 // CeeeExecutor implementation
 //
 // We use interfaces named ITabWindowManager and ITabWindow
 // (documented at
 // http://www.geoffchappell.com/viewer.htm?doc=studies/windows/ie/ieframe/interfaces/itabwindowmanager.htm
 // and
@@ skipping 859 matching lines @@
   hr = GetSite(IID_IFrameEventHandlerHost,
                reinterpret_cast<void**>(&frame_handler_host));
   if (FAILED(hr)) {
     NOTREACHED() << "No frame event handler host for executor. "
                  << com::LogHr(hr);
     return hr;
   }
 
   hr = frame_handler_host->InsertCode(code, file, all_frames, type);
   if (FAILED(hr)) {
-    NOTREACHED() << "Failed to insert code. " << com::LogHr(hr);
+    LOG(ERROR) << "Failed to insert code. " << com::LogHr(hr);
     return hr;
   }
 
   return S_OK;
 }
 
 HRESULT CeeeExecutor::GetCookieValue(BSTR url, BSTR name, BSTR* value) {
   DCHECK(value);
   if (!value)
     return E_POINTER;
@@ skipping 128 matching lines @@
 
 STDMETHODIMP CeeeExecutor::OnTopFrameBeforeNavigate(BSTR url) {
   DCHECK(infobar_manager_ != NULL) << "infobar_manager_ is not initialized";
   if (infobar_manager_ == NULL)
     return E_FAIL;
 
   // According to the specification, tab navigation closes the infobar.
   infobar_manager_->HideAll();
   return S_OK;
 }