Remove RenderProcessHost::is_extension_process

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 8416ae1e3867538b9e3d4ece36d4c7bc81f70e90..683e9946fddf2526bc2ae17478b816977d1d3df6 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -563,6 +563,9 @@ const char kExperimentalSpellcheckerFeatures[] =
 // numbers.
 const char kExplicitlyAllowedPorts[]        = "explicitly-allowed-ports";
 
+// Marks a renderer as extension process.
+const char kExtensionProcess[]              = "extension-process";
+
 // Frequency in seconds for Extensions auto-update.
 const char kExtensionsUpdateFrequency[]     = "extensions-update-frequency";