Remove IsRunningOnIOS6OrLater

iOS 5 hasn't been supported for several releases, so this is always
true.

BUG=300130

Review URL: https://codereview.chromium.org/349453002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@278519 0039d316-1c4b-4281-b951-d872f2087c98

base/ios/device_util.mm

@@ -44,13 +44,9 @@ NSString* GenerateClientId() {
   // http://openradar.appspot.com/12377282. If this is the case, revert to
   // generating a new one.
   if (!client_id || [client_id isEqualToString:kZeroUUID]) {
-    if (base::ios::IsRunningOnIOS6OrLater()) {
-      client_id = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
-      if ([client_id isEqualToString:kZeroUUID])
-        client_id = base::SysUTF8ToNSString(ios::device_util::GetRandomId());
-    } else {
+    client_id = [[[UIDevice currentDevice] identifierForVendor] UUIDString];
+    if ([client_id isEqualToString:kZeroUUID])
       client_id = base::SysUTF8ToNSString(ios::device_util::GetRandomId());
-    }
   }
   return client_id;
 }

base/ios/device_util_unittest.mm

@@ -52,8 +52,7 @@ TEST_F(DeviceUtilTest, GetDeviceIdentifier) {
   CleanNSUserDefaultsForDeviceId();
 
   std::string new_default_id = ios::device_util::GetDeviceIdentifier(NULL);
-  if (base::ios::IsRunningOnIOS6OrLater() &&
-      ![[[[UIDevice currentDevice] identifierForVendor] UUIDString]
+  if (![[[[UIDevice currentDevice] identifierForVendor] UUIDString]
           isEqualToString:@"00000000-0000-0000-0000-000000000000"]) {
     EXPECT_EQ(default_id, new_default_id);
   } else {

base/ios/ios_util.h

@@ -11,9 +11,6 @@
 namespace base {
 namespace ios {
 
-// Returns whether the operating system is iOS 6 or later.
-BASE_EXPORT bool IsRunningOnIOS6OrLater();
-
 // Returns whether the operating system is iOS 7 or later.
 BASE_EXPORT bool IsRunningOnIOS7OrLater();
 

base/ios/ios_util.mm

@@ -20,10 +20,6 @@ const int32* OSVersionAsArray() {
 namespace base {
 namespace ios {
 
-bool IsRunningOnIOS6OrLater() {
-  return IsRunningOnOrLater(6, 0, 0);
-}
-
 bool IsRunningOnIOS7OrLater() {
   return IsRunningOnOrLater(7, 0, 0);
 }

ios/consumer/base/util.mm

@@ -7,10 +7,6 @@
 
 namespace ios {
 
-bool IsRunningOnIOS6OrLater() {
-  return base::ios::IsRunningOnIOS6OrLater();
-}
-
 bool IsRunningOnOrLater(int major, int minor, int bug_fix) {
   return base::ios::IsRunningOnOrLater(major, minor, bug_fix);
 }

ios/public/consumer/base/util.h

@@ -7,9 +7,6 @@
 
 namespace ios {
 
-// Returns whether the operating system is iOS 6 or later.
-bool IsRunningOnIOS6OrLater();
-
 // Returns whether the operating system is at the given version or later.
 bool IsRunningOnOrLater(int major, int minor, int bug_fix);