Turn the utility process image decoder into a Mojo service.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index a1cb02bb0d4a664e2431eff1bf9c028db2bbd042..e47c45379fb4c95e39e3aef54511259ffb54ff82 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -274,6 +274,9 @@ const char kDisableIPv6[]                   = "disable-ipv6";
 const char kDisableMinimizeOnSecondLauncherItemClick[] =
     "disable-minimize-on-second-launcher-item-click";
 
+// Disable using Mojo for utility process services.
+const char kDisableMojoUtilityServices[] = "disable-mojo-utility-services";
+
 // Disables the new bookmark app system.
 const char kDisableNewBookmarkApps[]        = "disable-new-bookmark-apps";
 
@@ -1351,6 +1354,15 @@ bool PdfMaterialUIEnabled() {
   return false;
 }
 
+bool MojoUtilityServicesEnabled() {
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          kDisableMojoUtilityServices)) {
+    return false;
+  }
+
+  return true;
+}
+
 bool SettingsWindowEnabled() {
 #if defined(OS_CHROMEOS)
   return !base::CommandLine::ForCurrentProcess()->HasSwitch(