Send compositor frame IPC with metadata.

cc/software_renderer_unittest.cc

Index: cc/software_renderer_unittest.cc
diff --git a/cc/software_renderer_unittest.cc b/cc/software_renderer_unittest.cc
index 1e5eed2fb90b24a578e01b761e52630daa151e92..80df7cb85f26892fa87cd7ab869610ca7a2a8465 100644
--- a/cc/software_renderer_unittest.cc
+++ b/cc/software_renderer_unittest.cc
@@ -4,6 +4,7 @@
 
 #include "cc/software_renderer.h"
 
+#include "cc/compositor_frame_metadata.h"
 #include "cc/quad_sink.h"
 #include "cc/render_pass.h"
 #include "cc/render_pass_draw_quad.h"
@@ -46,6 +47,8 @@ public:
     virtual void setManagedMemoryPolicy(const ManagedMemoryPolicy& policy) OVERRIDE { };
     virtual void enforceManagedMemoryPolicy(const ManagedMemoryPolicy& policy) OVERRIDE { };
     virtual bool hasImplThread() const OVERRIDE { return false; }
+    virtual CompositorFrameMetadata makeCompositorFrameMetadata() const
+        OVERRIDE { return CompositorFrameMetadata(); }
 
 protected:
     scoped_ptr<FakeOutputSurface> m_outputSurface;