WebGL: Don't destroy mailbox textures in the destructor until they're released.

public/platform/WebExternalTextureMailbox.h

Index: public/platform/WebExternalTextureMailbox.h
diff --git a/public/platform/WebExternalTextureMailbox.h b/public/platform/WebExternalTextureMailbox.h
index d8703c6a949158ba8711d5d6277168bea11fcae3..50f54c0123a9b00b960edde2a9e8ed65844aac6a 100644
--- a/public/platform/WebExternalTextureMailbox.h
+++ b/public/platform/WebExternalTextureMailbox.h
@@ -44,6 +44,16 @@ struct WebExternalTextureMailbox {
     }
 };
 
+inline bool operator==(const WebExternalTextureMailbox& a, const WebExternalTextureMailbox& b)
+{
+    return !memcmp(a.name, b.name, sizeof(a.name));

[abarth-chromium, 2014/04/24 14:59:06]

We don't need to compare the syncPoint as well?

[dshwang, 2014/04/24 15:03:23]

we don't need syncPoint comparison. The main purpose of operator==() is to
compare webgl's mailbox to compositor's mailbox. compositor usually changes sync
point.

[danakj, 2014/04/24 15:10:02]

If you're not comparing every field, might I suggest a method instead of
operator== such as NameEquals()?

[dshwang, 2014/04/24 15:19:11]

nameEquals() looks better. It's why I wait while don't click commit.
I'll update soon. :)

+}
+
+inline bool operator!=(const WebExternalTextureMailbox& a, const WebExternalTextureMailbox& b)
+{
+    return !(a == b);
+}
+
 } // namespace blink
 
 #endif // WebExternalTextureMailbox_h