Remove static thread pointers from CC

cc/compositor_support_state.h

+// Copyright 2012 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CC_COMPOSITOR_SUPPORT_STATE_H_
+#define CC_COMPOSITOR_SUPPORT_STATE_H_
+
+namespace cc {
+
+class CCThread;
+
+struct CompositorSupportState {

[jamesr, 2012/10/22 22:00:36]

Not sure you really need this struct - most users seem to only care about one
thread or the other (nearly always just the implThread).  Since our
initialization paths are always on the mainThread, passing that down through the
callstack typically isn't necessary either - we can just pick up the pointer in
whatever step needs it (CCProxy initialization typically).  What about just
passing an implThread pointer down?

+    CCThread* mainThread;
+    CCThread* implThread;
+
+    CompositorSupportState();
+};
+
+}
+
+#endif