Add a command line switch to allow setting the max size...

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
===================================================================
--- chrome/common/chrome_switches.cc	(revision 19096)
+++ chrome/common/chrome_switches.cc	(working copy)
@@ -124,6 +124,12 @@
 // UserDatadir.
 const wchar_t kDiskCacheDir[]                  = L"disk-cache-dir";
 
+// Forces the maximum disk space to be used by the disk cache, in bytes.
+const wchar_t kDiskCacheSize[]                  = L"disk-cache-size";
+
+// Forces the maximum disk space to be used by the media cache, in bytes.
+const wchar_t kMediaCacheSize[]                  = L"media-cache-size";
+
 // Whether the multiple profiles feature based on the user-data-dir flag is
 // enabled or not.
 const wchar_t kEnableUserDataDirProfiles[]     = L"enable-udd-profiles";