Fix the MessageLoop type in case more than one ozone platform is built

ui/ozone/public/ozone_platform.h

Index: ui/ozone/public/ozone_platform.h
diff --git a/ui/ozone/public/ozone_platform.h b/ui/ozone/public/ozone_platform.h
index 236924f01591b3a53d0c52d6959e7854c9f8483f..4a027b2f51d4ce3b83f609fd177db862aeebb6b9 100644
--- a/ui/ozone/public/ozone_platform.h
+++ b/ui/ozone/public/ozone_platform.h
@@ -8,6 +8,7 @@
 #include <memory>
 
 #include "base/macros.h"
+#include "base/message_loop/message_loop.h"
 #include "ui/ozone/ozone_export.h"
 
 namespace display {
@@ -108,6 +109,10 @@ class OZONE_EXPORT OzonePlatform {
   virtual std::unique_ptr<display::NativeDisplayDelegate>
   CreateNativeDisplayDelegate() = 0;
 
+  // Returns the message loop type required for OzonePlatform instance that
+  // will be initialized.
+  virtual base::MessageLoop::Type GetMessageLoopTypeForGpu();
+
   // Ozone platform implementations may also choose to expose mojo interfaces to
   // internal functionality. Embedders wishing to take advantage of ozone mojo
   // implementations must invoke AddInterfaces with a valid
@@ -118,14 +123,14 @@ class OZONE_EXPORT OzonePlatform {
   // implementations to opt out of implementing any Mojo interfaces.
   virtual void AddInterfaces(service_manager::InterfaceRegistry* registry);
 
+  static void CreateInstance();

[kylechar, 2017/02/07 17:41:47]

Please put this with the static functions, above "static void
InitializeForUI()".

[tonikitoo, 2017/02/07 19:36:41]

Done.

+
  private:
   virtual void InitializeUI() = 0;
   virtual void InitializeGPU() = 0;
   virtual void InitializeUI(const InitParams& args);
   virtual void InitializeGPU(const InitParams& args);
 
-  static void CreateInstance();
-
   static OzonePlatform* instance_;
 
   DISALLOW_COPY_AND_ASSIGN(OzonePlatform);