Bug 1365927 - Part 1. Add missing headers and other build housekeeping. r=dvander

dom/media/ipc/PVideoDecoderManager.ipdl

@@ -3,6 +3,7 @@
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 
+include protocol PTexture;
 include protocol PVideoDecoder;
 include LayersSurfaces;
 include "mozilla/dom/MediaIPCUtils.h";

gfx/ipc/CompositorOptions.h

@@ -45,7 +45,7 @@ public:
   bool UseAPZ() const { return mUseAPZ; }
   bool UseWebRender() const { return mUseWebRender; }
 
-  bool operator==(const CompositorOptions& aOther) {
+  bool operator==(const CompositorOptions& aOther) const {
     return mUseAPZ == aOther.mUseAPZ &&
            mUseWebRender == aOther.mUseWebRender;
   }