Revert of [blink] Unique pointers in Platform.h

content/test/test_blink_web_unit_test_support.h

Index: content/test/test_blink_web_unit_test_support.h
diff --git a/content/test/test_blink_web_unit_test_support.h b/content/test/test_blink_web_unit_test_support.h
index 78b7d2cf4c02a308fa381c55dae90a508089019e..ff8c0410ecd61533aef8c12d08b762c2abac3b3b 100644
--- a/content/test/test_blink_web_unit_test_support.h
+++ b/content/test/test_blink_web_unit_test_support.h
@@ -55,7 +55,7 @@
 
   blink::WebCompositorSupport* CompositorSupport() override;
 
-  std::unique_ptr<blink::WebGestureCurve> CreateFlingAnimationCurve(
+  blink::WebGestureCurve* CreateFlingAnimationCurve(
       blink::WebGestureDevice device_source,
       const blink::WebFloatPoint& velocity,
       const blink::WebSize& cumulative_scroll) override;
@@ -71,8 +71,7 @@
                      const blink::WebSecurityOrigin& mainFrameOrigin,
                      blink::WebPluginListBuilder* builder) override;
 
-  std::unique_ptr<blink::WebRTCCertificateGenerator>
-  CreateRTCCertificateGenerator() override;
+  blink::WebRTCCertificateGenerator* CreateRTCCertificateGenerator() override;
 
  private:
   MockWebBlobRegistryImpl blob_registry_;