Removed offline policy; it's not being used, and we have no plans to use it.

content/public/common/content_switches.cc

Index: content/public/common/content_switches.cc
diff --git a/content/public/common/content_switches.cc b/content/public/common/content_switches.cc
index 589f6943ef2e2ef2e1cb77781b21ed125e9e4eeb..3d8b15bbfba07c5dea676e9cab8a3cb32672efae 100644
--- a/content/public/common/content_switches.cc
+++ b/content/public/common/content_switches.cc
@@ -448,9 +448,6 @@ const char kEnableLogging[]                 = "enable-logging";
 // Enables the memory benchmarking extension
 const char kEnableMemoryBenchmarking[]      = "enable-memory-benchmarking";
 
-// Enables use of cache if offline, even if it's stale
-const char kEnableOfflineCacheAccess[]      = "enable-offline-cache-access";
-
 // Enable rasterizer that writes directly to GPU memory.
 const char kEnableOneCopy[]                 = "enable-one-copy";