Implement UnitTestSupport::readFromFile

webkit/support/test_webkit_platform_support.cc

Index: webkit/support/test_webkit_platform_support.cc
diff --git a/webkit/support/test_webkit_platform_support.cc b/webkit/support/test_webkit_platform_support.cc
index 6eecfedd0d058906e5715d657c61ba8d55e684aa..c74f343eea178b2b99181a47d6795007b69729b0 100644
--- a/webkit/support/test_webkit_platform_support.cc
+++ b/webkit/support/test_webkit_platform_support.cc
@@ -6,6 +6,7 @@
 
 #include "base/command_line.h"
 #include "base/file_util.h"
+#include "base/files/file_path.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/metrics/stats_counters.h"
 #include "base/path_service.h"
@@ -345,3 +346,12 @@ WebKit::WebLayerTreeView*
   return createLayerTreeViewForTesting();
 }
 
+WebKit::WebData TestWebKitPlatformSupport::readFromFile(
+    const WebKit::WebString& path) {
+  base::FilePath file_path = base::FilePath::FromUTF16Unsafe(path);
+
+  std::string buffer;
+  file_util::ReadFileToString(file_path, &buffer);
+
+  return WebKit::WebData(buffer.data(), buffer.size());
+}