Remove unused content::GetWebKitMajorVersion() and content::GetWebKitMinorVersion().

content/common/user_agent.cc

Index: content/common/user_agent.cc
diff --git a/content/common/user_agent.cc b/content/common/user_agent.cc
index ad9c0013adaf1250f12e4a708c0e5653925f74e0..5602261f68182583cd7840e983558b86d096bb0c 100644
--- a/content/common/user_agent.cc
+++ b/content/common/user_agent.cc
@@ -30,14 +30,6 @@ std::string GetWebKitVersion() {
                             WEBKIT_SVN_REVISION);
 }
 
-int GetWebKitMajorVersion() {
-  return WEBKIT_VERSION_MAJOR;
-}
-
-int GetWebKitMinorVersion() {
-  return WEBKIT_VERSION_MINOR;
-}
-
 std::string GetWebKitRevision() {
   return WEBKIT_SVN_REVISION;
 }