Fixes for two different HUD issues related to win32k lockdown

cc/trees/layer_tree_host_client.h

Index: cc/trees/layer_tree_host_client.h
diff --git a/cc/trees/layer_tree_host_client.h b/cc/trees/layer_tree_host_client.h
index ac025f2ef7078b8ed8a4def8ae35715ba6f08627..ad4b3a53c2a107a3387f6c06098b2cb69c9da0c5 100644
--- a/cc/trees/layer_tree_host_client.h
+++ b/cc/trees/layer_tree_host_client.h
@@ -9,6 +9,8 @@
 #include "base/memory/scoped_ptr.h"
 #include "base/time/time.h"
 
+class SkTypeface;
+
 namespace gfx {
 class Vector2d;
 class Vector2dF;
@@ -62,6 +64,8 @@ class LayerTreeHostClient {
   // a TextureLayer that calls SetRateLimitContext(true).
   virtual void RateLimitSharedMainThreadContext() {}
 
+  virtual SkTypeface* GetHudTypeface() = 0;

[enne (OOO), 2015/02/05 01:30:28]

This is here (vs LayerTreeSettings) so that the font can be initialized lazily
for non-Windows platforms?

[scottmg, 2015/02/05 03:28:32]

LayerTreeSettings seems fine if that's OK w/ you. I almost put it there but it
seemed like ... just bools and numbers so wasn't sure. Much less plumbing to
have it there. :)

[enne (OOO), 2015/02/05 17:54:44]

Or, said differently, if lazy initialization isn't a goal, I'd prefer it to be a
LayerTreeSetting or even just a setter on LayerTreeHost that got called
unconditionally.

If it is a goal, I can't really think of a better place to put a function like
that, so this is probably ok.

+
  protected:
   virtual ~LayerTreeHostClient() {}
 };