PrintPreviewPdfGeneratedBrowserTest properly listens to messages and exits correctly.

chrome/browser/printing/print_preview_pdf_generated_browsertest.cc

Index: chrome/browser/printing/print_preview_pdf_generated_browsertest.cc
diff --git a/chrome/browser/printing/print_preview_pdf_generated_browsertest.cc b/chrome/browser/printing/print_preview_pdf_generated_browsertest.cc
index f8dd016d8476c5926f51517be79752c56119d139..313378c58e262a3a2a502009a40c23679141ea00 100644
--- a/chrome/browser/printing/print_preview_pdf_generated_browsertest.cc
+++ b/chrome/browser/printing/print_preview_pdf_generated_browsertest.cc
@@ -652,17 +652,15 @@ IN_PROC_BROWSER_TEST_F(PrintPreviewPdfGeneratedBrowserTest,
   // browsertest must be run with '--single_process' not '--single-process.'
   while (true) {
     std::string input;
-    std::getline(std::cin, input);
-    if (input.empty()) {
-      while (std::cin.eof()) {
+    while (input.empty()) {
+      if (std::cin.eof())
         std::cin.clear();
-        std::getline(std::cin, input);
-        if (!input.empty()) {
-          break;
-        }
-      }
+      std::getline(std::cin, input);
     }
 
+    if (input.find("QUIT") != std::string::npos)

[Lei Zhang, 2014/07/24 21:06:52]

If you do this, shouldn't it be input == "QUIT" ? Also, you would want to update
the comment block above at line 647.

[ivandavid, 2014/07/24 21:39:37]

Done.

+      break;
+
     base::FilePath::StringType file_extension = FILE_PATH_LITERAL(".pdf");
     base::FilePath::StringType cmd;
 #if defined(OS_POSIX)