Reduce string copies in GURL creation

components/autofill/content/renderer/form_autofill_util.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 "components/autofill/content/renderer/form_autofill_util.h"
 
 #include <map>
 #include <set>
 
 #include "base/command_line.h"
 #include "base/logging.h"
 #include "base/memory/scoped_vector.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "build/build_config.h"
 #include "components/autofill/core/common/autofill_data_validation.h"
 #include "components/autofill/core/common/autofill_regexes.h"
 #include "components/autofill/core/common/autofill_switches.h"
 #include "components/autofill/core/common/autofill_util.h"
 #include "components/autofill/core/common/form_data.h"
 #include "components/autofill/core/common/form_field_data.h"
+#include "third_party/WebKit/public/platform/URLConversion.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/platform/WebVector.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebElement.h"
 #include "third_party/WebKit/public/web/WebElementCollection.h"
 #include "third_party/WebKit/public/web/WebFormControlElement.h"
 #include "third_party/WebKit/public/web/WebFormElement.h"
 #include "third_party/WebKit/public/web/WebInputElement.h"
 #include "third_party/WebKit/public/web/WebLabelElement.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
@@ skipping 1379 matching lines @@
   if (!frame)
     return false;
 
   form->name = GetFormIdentifier(form_element);
   form->origin = GetCanonicalOriginForDocument(frame->document());
   form->action = frame->document().completeURL(form_element.action());
 
   // If the completed URL is not valid, just use the action we get from
   // WebKit.
   if (!form->action.is_valid())
-    form->action = GURL(form_element.action());
+    form->action = GURL(blink::WebStringToGURL(form_element.action()));
 
   WebVector<WebFormControlElement> control_elements;
   form_element.getFormControlElements(control_elements);
 
   std::vector<blink::WebElement> dummy_fieldset;
   return FormOrFieldsetsToFormData(&form_element, &form_control_element,
                                    dummy_fieldset, control_elements,
                                    extract_mask, form, field);
 }
 
@@ skipping 293 matching lines @@
     // Zero selection start is for password manager, which can show usernames
     // that do not begin with the user input value.
     selection_start = (offset == base::string16::npos) ? 0 : offset;
   }
 
   input_element->setSelectionRange(selection_start, suggestion.length());
 }
 
 }  // namespace form_util
 }  // namespace autofill