content: implement unittests backend for Ozone GBM

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 590104b8428a8145afcb8c0f8da5a4a2e95ed591..6a7ec0f3b537521973fd5a0b6c2c37c6a471ee63 100644
--- a/ui/ozone/public/ozone_platform.h
+++ b/ui/ozone/public/ozone_platform.h
@@ -51,6 +51,9 @@ class OZONE_EXPORT OzonePlatform {
   // Initializes the subsystems/resources necessary for the GPU process.
   static void InitializeForGPU();
 
+  // Initializes both Browser and GPU side code.
+  static void InitializeForTest();

[spang, 2015/07/13 17:08:26]

I don't think we should have an "InitializeForTest". Different tests have
different requirements. Testing is a higher level concern than belongs here.

+
   static OzonePlatform* GetInstance();
 
   // Factory getters to override in subclasses. The returned objects will be
@@ -72,6 +75,7 @@ class OZONE_EXPORT OzonePlatform {
  private:
   virtual void InitializeUI() = 0;
   virtual void InitializeGPU() = 0;
+  virtual void InitializeTest() = 0;
 
   static void CreateInstance();