Move EmptyString, kWhitespace and the BOM to base.

chrome/renderer/chrome_render_view_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 "chrome/renderer/chrome_render_view_observer.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 953 matching lines @@
   char buf[128];
   sprintf_s(buf, "%d chars retrieved for indexing in %gms\n",
             contents.size(), (end - begin)*1000);
   OutputDebugStringA(buf);
 #endif
 
   // When the contents are clipped to the maximum, we don't want to have a
   // partial word indexed at the end that might have been clipped. Therefore,
   // terminate the string at the last space to ensure no words are clipped.
   if (contents->size() == kMaxIndexChars) {
-    size_t last_space_index = contents->find_last_of(kWhitespaceUTF16);
-    if (last_space_index == std::wstring::npos)
+    size_t last_space_index = contents->find_last_of(base::kWhitespaceUTF16);
+    if (last_space_index == base::string16::npos)
       return;  // don't index if we got a huge block of text with no spaces
     contents->resize(last_space_index);
   }
 }
 
 ExternalHostBindings* ChromeRenderViewObserver::GetExternalHostBindings() {
   if (!external_host_bindings_.get()) {
     external_host_bindings_.reset(new ExternalHostBindings(
         render_view(), routing_id()));
   }
@@ skipping 30 matching lines @@
     WebElement element = node.to<WebElement>();
     if (!element.hasTagName(tag_name))
       continue;
     WebString value = element.getAttribute(attribute_name);
     if (value.isNull() || !LowerCaseEqualsASCII(value, "refresh"))
       continue;
     return true;
   }
   return false;
 }