Removed use of IsRunningOnIOS8OrLater from snapshots code.

ios/chrome/browser/snapshots/snapshot_cache_unittest.mm

Index: ios/chrome/browser/snapshots/snapshot_cache_unittest.mm
diff --git a/ios/chrome/browser/snapshots/snapshot_cache_unittest.mm b/ios/chrome/browser/snapshots/snapshot_cache_unittest.mm
index ef3145d505995afe4aa74d6ca81610742849d458..dc0e5f1577ed005d974603e5b8d32526f9bfdb49 100644
--- a/ios/chrome/browser/snapshots/snapshot_cache_unittest.mm
+++ b/ios/chrome/browser/snapshots/snapshot_cache_unittest.mm
@@ -351,8 +351,8 @@ TEST_F(SnapshotCacheTest, Purge) {
 TEST_F(SnapshotCacheTest, HandleLowMemory) {
 // TODO(droger): This test fails on iPad iOS8 device: http://crbug.com/455209

[sdefresne, 2016/10/19 18:22:27]

I've unassigned the bug so that we investigate whether this is still failing or
not.

[pkl (ping after 24h if needed), 2016/10/19 20:35:03]

Updated this comment and crbug.

 #if !TARGET_IPHONE_SIMULATOR
-  if (IsIPadIdiom() && base::ios::IsRunningOnIOS8OrLater()) {
-    LOG(WARNING) << "Test disabled on iPad iOS8 device.";
+  if (IsIPadIdiom()) {
+    LOG(WARNING) << "Test disabled on iPad device.";
     return;
   }
 #endif