cc: Use stl utilities from the base namespace

cc/test/test_web_graphics_context_3d.h

 // 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.
 
 #ifndef CC_TEST_TEST_WEB_GRAPHICS_CONTEXT_3D_H_
 #define CC_TEST_TEST_WEB_GRAPHICS_CONTEXT_3D_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 282 matching lines @@
   // When set, mapBufferCHROMIUM will return NULL after this many times.
   void set_times_map_buffer_chromium_succeeds(int times) {
     times_map_buffer_chromium_succeeds_ = times;
   }
 
   size_t NumTextures() const;
   GLuint TextureAt(int i) const;
 
   size_t NumUsedTextures() const { return used_textures_.size(); }
   bool UsedTexture(int texture) const {
-    return ContainsKey(used_textures_, texture);
+    return base::ContainsKey(used_textures_, texture);
   }
   void ResetUsedTextures() { used_textures_.clear(); }
 
   void set_have_extension_io_surface(bool have) {
     test_capabilities_.iosurface = have;
     test_capabilities_.texture_rectangle = have;
   }
   void set_have_extension_egl_image(bool have) {
     test_capabilities_.egl_image_external = have;
   }
@@ skipping 170 matching lines @@
 
   scoped_refptr<Namespace> namespace_;
   static Namespace* shared_namespace_;
 
   base::WeakPtrFactory<TestWebGraphicsContext3D> weak_ptr_factory_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_TEST_WEB_GRAPHICS_CONTEXT_3D_H_