cc: Remove the software compositing bool from PrepareTextureMailbox

components/test_runner/test_plugin.cc

Index: components/test_runner/test_plugin.cc
diff --git a/components/test_runner/test_plugin.cc b/components/test_runner/test_plugin.cc
index 7fb88ea0df9cdc189d1fbe42292744e42b49a0f8..64b6424aac77ab46bdad6cdc8413bca513413fe3 100644
--- a/components/test_runner/test_plugin.cc
+++ b/components/test_runner/test_plugin.cc
@@ -307,8 +307,7 @@ static void ReleaseSharedMemory(std::unique_ptr<cc::SharedBitmap> bitmap,
 
 bool TestPlugin::PrepareTextureMailbox(
     cc::TextureMailbox* mailbox,
-    std::unique_ptr<cc::SingleReleaseCallback>* release_callback,
-    bool use_shared_memory) {
+    std::unique_ptr<cc::SingleReleaseCallback>* release_callback) {
   if (!mailbox_changed_)
     return false;
   *mailbox = texture_mailbox_;