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

Review-Url: https://codereview.chromium.org/2152023003
Cr-Commit-Position: refs/heads/master@{#406092}

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;
 }

content/public/common/user_agent.h

@@ -14,10 +14,6 @@ namespace content {
 // Returns the WebKit version, in the form "major.minor (branch@revision)".
 CONTENT_EXPORT std::string GetWebKitVersion();
 
-// The following 2 functions return the major and minor webkit versions.
-CONTENT_EXPORT int GetWebKitMajorVersion();
-CONTENT_EXPORT int GetWebKitMinorVersion();
-
 CONTENT_EXPORT std::string GetWebKitRevision();
 
 // Builds a User-agent compatible string that describes the OS and CPU type.