Fix clang build by moving ToLowerASCII into base namespace.

skia/ext/vector_canvas_unittest.cc

 // Copyright (c) 2006-2008 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 "build/build_config.h"
 
 #if !defined(OS_WIN)
 #include <unistd.h>
 #endif
 
@@ skipping 218 matching lines @@
     PathService::Get(base::DIR_SOURCE_ROOT, &test_dir_);
     test_dir_ = test_dir_.AppendASCII("skia").
                           AppendASCII("ext").
                           AppendASCII("data").
                           AppendASCII(test_info.test_case_name()).
                           AppendASCII(test_info.name());
 
     // Hack for a quick lowercase. We assume all the tests names are ASCII.
     std::string tmp(WideToASCII(test_dir_.ToWStringHack()));
     for (size_t i = 0; i < tmp.size(); ++i)
-      tmp[i] = ToLowerASCII(tmp[i]);
+      tmp[i] = base::ToLowerASCII(tmp[i]);
     test_dir_ = FilePath::FromWStringHack(ASCIIToWide(tmp));
 
     if (action_ == GENERATE) {
       // Make sure the directory exist.
       file_util::CreateDirectory(test_dir_);
     }
   }
 
   // Returns the fully qualified path of a data file.
   FilePath test_file(const FilePath::StringType& filename) const {
     // Hack for a quick lowercase. We assume all the test data file names are
     // ASCII.
 #if defined(OS_WIN)
     std::string tmp = WideToASCII(filename);
 #else
     std::string tmp(filename);
 #endif
     for (size_t i = 0; i < tmp.size(); ++i)
-      tmp[i] = ToLowerASCII(tmp[i]);
+      tmp[i] = base::ToLowerASCII(tmp[i]);
 
     return test_dir_.AppendASCII(tmp);
   }
 
   // Compares or saves the bitmap currently loaded in the context, depending on
   // kGenerating value. Returns 0 on success or any positive value between ]0,
   // 100] on failure. The return value is the percentage of difference between
   // the image in the file and the image in the canvas.
   double ProcessCanvas(const skia::PlatformCanvas& canvas,
                        FilePath::StringType filename) const {
@@ skipping 696 matching lines @@
   {
     vcanvas_->rotate(67);
     pcanvas_->rotate(67);
     vcanvas_->drawBitmap(bitmap, 20, -50, NULL);
     pcanvas_->drawBitmap(bitmap, 20, -50, NULL);
     EXPECT_EQ(0., ProcessImage(FILE_PATH_LITERAL("rotate")));
   }
 }
 
 }  // namespace skia