Change the flag which enables OOP PDF to an enable/disable flag

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 6ddf8c83dc4823eef68acb6bad675a3abf2c415c..3ac4ba445e10452a9d9a3ebffc3d8056eb87ba48 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -884,8 +884,9 @@ const char kOriginToForceQuicOn[]           = "origin-to-force-quic-on";
 // chrome process started. (See ProcessSingleton for more details.)
 const char kOriginalProcessStartTime[]      = "original-process-start-time";
 
-// Enable the out of process PDF plugin.
-const char kOutOfProcessPdf[] = "out-of-process-pdf";
+// Enable or disable the out of process PDF plugin.

[Lei Zhang, 2014/11/25 22:22:30]

Can you keep these in alphabetical order?

[raymes, 2014/11/25 22:36:56]

Done.

+const char kEnableOutOfProcessPdf[]         = "enable-out-of-process-pdf";
+const char kDisableOutOfProcessPdf[]        = "disable-out-of-process-pdf";
 
 // Packages an extension to a .crx installable file from a given directory.
 const char kPackExtension[]                 = "pack-extension";
@@ -1366,6 +1367,17 @@ bool AboutInSettingsEnabled() {
           ::switches::kDisableAboutInSettings);
 }
 
+bool OutOfProcessPdfEnabled() {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(kEnableOutOfProcessPdf))
+    return true;
+
+  if (CommandLine::ForCurrentProcess()->HasSwitch(kDisableOutOfProcessPdf))
+    return false;
+
+  // Default.
+  return false;
+}
+
 bool SettingsWindowEnabled() {
 #if defined(OS_CHROMEOS)
   return !CommandLine::ForCurrentProcess()->HasSwitch(