PPAPI: Format ppapi/thunk using clang-format.

ppapi/thunk/ppb_instance_api.h

Index: ppapi/thunk/ppb_instance_api.h
diff --git a/ppapi/thunk/ppb_instance_api.h b/ppapi/thunk/ppb_instance_api.h
index 23bf18c112a092952a35f50fcfc53f83448dccfa..9a4e4a3558e74920210736980801274bc1a55526 100644
--- a/ppapi/thunk/ppb_instance_api.h
+++ b/ppapi/thunk/ppb_instance_api.h
@@ -90,16 +90,15 @@ class PPB_Instance_API {
 
   // Fullscreen.
   virtual PP_Bool IsFullscreen(PP_Instance instance) = 0;
-  virtual PP_Bool SetFullscreen(PP_Instance instance,
-                                PP_Bool fullscreen) = 0;
+  virtual PP_Bool SetFullscreen(PP_Instance instance, PP_Bool fullscreen) = 0;
   virtual PP_Bool GetScreenSize(PP_Instance instance, PP_Size* size) = 0;
 
   // This is an implementation-only function which grabs an instance of a
   // "singleton resource". These are used to implement instance interfaces
   // (functions which are associated with the instance itself as opposed to a
   // resource).
-  virtual Resource* GetSingletonResource(
-      PP_Instance instance, SingletonResourceID id) = 0;
+  virtual Resource* GetSingletonResource(PP_Instance instance,
+                                         SingletonResourceID id) = 0;
 
   // InputEvent.
   virtual int32_t RequestInputEvents(PP_Instance instance,