Use std::string instead of WTF::String / TextStream

cc/CCResourceProvider.cpp

 // Copyright 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 "config.h"
 
 #include "CCResourceProvider.h"
+#ifdef LOG
+#undef LOG
+#endif
 
+#include "base/string_split.h"
+#include "base/string_util.h"
 #include "CCProxy.h"
 #include "CCRendererGL.h" // For the GLC() macro.
 #include "Extensions3DChromium.h"
 #include "IntRect.h"
 #include "LayerTextureSubImage.h"
 #include <limits.h>
 #include <public/WebGraphicsContext3D.h>
 #include <wtf/HashSet.h>
 
 using WebKit::WebGraphicsContext3D;
@@ skipping 318 matching lines @@
     WebGraphicsContext3D* context3d = m_context->context3D();
     if (!context3d) {
         m_maxTextureSize = INT_MAX;
 
         // FIXME: Implement this path for software compositing.
         return false;
     }
     if (!context3d->makeContextCurrent())
         return false;
 
-    WebKit::WebString extensionsWebString = context3d->getString(GraphicsContext3D::EXTENSIONS);
-    String extensionsString(extensionsWebString.data(), extensionsWebString.length());
-    Vector<String> extensions;
-    extensionsString.split(' ', extensions);
+    std::string extensionsString = UTF16ToASCII(context3d->getString(GraphicsContext3D::EXTENSIONS));
+    std::vector<std::string> extensions;
+    base::SplitString(extensionsString, ' ', &extensions);
     bool useMapSub = false;
     for (size_t i = 0; i < extensions.size(); ++i) {
         if (extensions[i] == "GL_EXT_texture_storage")
             m_useTextureStorageExt = true;
         else if (extensions[i] == "GL_ANGLE_texture_usage")
             m_useTextureUsageHint = true;
         else if (extensions[i] == "GL_CHROMIUM_map_sub")
             useMapSub = true;
         else if (extensions[i] == "GL_CHROMIUM_shallow_flush")
             m_useShallowFlush = true;
@@ skipping 174 matching lines @@
         for (ResourceMap::iterator it = m_resources.begin(); it != m_resources.end(); ++it) {
             if (childPoolSet.contains(it->second.pool))
                 ++maxMailboxCount;
         }
     }
     while (m_mailboxes.size() > maxMailboxCount)
         m_mailboxes.removeFirst();
 }
 
 }