Fix shadowed variables in the content layer.

Shadowed variables can make code harder to read. Don't support them
in the content layer.

BUG=794619

This CL was uploaded by git cl split.

R=vmpstr@chromium.org

Change-Id: I683ff26a587f65c1339fda72c4b20877974925f1
Reviewed-on: https://chromium-review.googlesource.com/923344Reviewed-by: vmpstr <vmpstr@chromium.org>
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#537563}

content/renderer/gpu/actions_parser.cc

@@ -89,9 +89,9 @@ bool ActionsParser::ParsePointerActionSequence() {
   for (size_t action_index = 0; action_index < longest_action_sequence_;
        ++action_index) {
     SyntheticPointerActionListParams::ParamList param_list;
-    for (const auto pointer_list : pointer_actions_list_) {
-      if (action_index < pointer_list.size())
-        param_list.push_back(pointer_list[action_index]);
+    for (const auto pointer_action_list : pointer_actions_list_) {
+      if (action_index < pointer_action_list.size())
+        param_list.push_back(pointer_action_list[action_index]);
     }
     gesture_params_.PushPointerActionParamsList(param_list);
   }