ui/gfx: Add ToString() function to Size class.

chrome/browser/printing/printing_layout_uitest.cc

Index: chrome/browser/printing/printing_layout_uitest.cc
diff --git a/chrome/browser/printing/printing_layout_uitest.cc b/chrome/browser/printing/printing_layout_uitest.cc
index a3917c5d55844c9878d6a5ea06fcf63b2059d0ca..0786a729989a8f124c938c3d1a87519b86046c6f 100644
--- a/chrome/browser/printing/printing_layout_uitest.cc
+++ b/chrome/browser/printing/printing_layout_uitest.cc
@@ -86,9 +86,9 @@ class PrintingLayoutTest : public PrintingTest<UITest> {
       Image png_content(png);
       double diff_emf = emf_content.PercentageDifferent(test_content);
 
-      EXPECT_EQ(0., diff_emf) << verification_name <<
-          L" original size:" << emf_content.size() <<
-          L" result size:" << test_content.size();
+      EXPECT_EQ(0., diff_emf) << WideToUTF8(verification_name) <<
+          " original size:" << emf_content.size().ToString() <<
+          " result size:" << test_content.size().ToString();
       if (diff_emf) {
         // Backup the result emf file.
         file_util::CopyFile(test_result, FilePath(
@@ -98,9 +98,9 @@ class PrintingLayoutTest : public PrintingTest<UITest> {
       // This verification is only to know that the EMF rendering stays
       // immutable.
       double diff_png = emf_content.PercentageDifferent(png_content);
-      EXPECT_EQ(0., diff_png) << verification_name <<
-          L" original size:" << emf_content.size() <<
-          L" result size:" << test_content.size();
+      EXPECT_EQ(0., diff_png) << WideToUTF8(verification_name) <<
+          " original size:" << emf_content.size().ToString() <<
+          " result size:" << test_content.size().ToString();
       if (diff_png) {
         // Backup the rendered emf file to detect the rendering difference.
         emf_content.SaveToPng(FilePath(verification_file + L"_rendering.png"));