Display content_shell error messages.

content/shell/app/shell_main_delegate.cc

Index: content/shell/app/shell_main_delegate.cc
diff --git a/content/shell/app/shell_main_delegate.cc b/content/shell/app/shell_main_delegate.cc
index 1a72b4be9dd669d475848944cd4caa673975092b..1d8d564e1a1e27506d73c255679f30c8dc6eb26c 100644
--- a/content/shell/app/shell_main_delegate.cc
+++ b/content/shell/app/shell_main_delegate.cc
@@ -10,7 +10,6 @@
 #include "base/files/file.h"
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
-#include "base/logging.h"
 #include "base/path_service.h"
 #include "build/build_config.h"
 #include "cc/base/switches.h"
@@ -29,7 +28,6 @@
 #include "content/shell/common/layout_test/layout_test_content_client.h"
 #include "content/shell/common/layout_test/layout_test_switches.h"
 #include "content/shell/common/shell_content_client.h"
-#include "content/shell/common/shell_switches.h"
 #include "content/shell/renderer/layout_test/layout_test_content_renderer_client.h"
 #include "content/shell/renderer/shell_content_renderer_client.h"
 #include "content/shell/utility/shell_content_utility_client.h"
@@ -100,18 +98,6 @@ const GUID kContentShellProviderName = {
         { 0x84, 0x13, 0xec, 0x94, 0xd8, 0xc2, 0xa4, 0xb6 } };
 #endif
 
-void InitLogging() {
-  base::FilePath log_filename;
-  PathService::Get(base::DIR_EXE, &log_filename);
-  log_filename = log_filename.AppendASCII("content_shell.log");
-  logging::LoggingSettings settings;
-  settings.logging_dest = logging::LOG_TO_ALL;
-  settings.log_file = log_filename.value().c_str();
-  settings.delete_old = logging::DELETE_OLD_LOG_FILE;
-  logging::InitLogging(settings);
-  logging::SetLogItems(true, true, true, true);
-}
-
 }  // namespace
 
 namespace content {
@@ -142,7 +128,6 @@ bool ShellMainDelegate::BasicStartupComplete(int* exit_code) {
   EnsureCorrectResolutionSettings();
 #endif  // OS_MACOSX
 
-  InitLogging();

[Dirk Pranke, 2016/11/29 02:20:48]

You should probably leave the logging code in and have:

if (!command_line.HasSwitch(switches::kRunLayoutTest))
  InitLogging();

So that we still get content_shell.log in the normal case.

[Jack Bates, 2016/12/01 17:47:38]

Done.

   if (command_line.HasSwitch(switches::kCheckLayoutTestSysDeps)) {
     // If CheckLayoutSystemDeps succeeds, we don't exit early. Instead we
     // continue and try to load the fonts in BlinkTestPlatformInitialize