Implements part of Device Motion in the Renderer

content/browser/device_orientation/provider_impl.h

Index: content/browser/device_orientation/provider_impl.h
diff --git a/content/browser/device_orientation/provider_impl.h b/content/browser/device_orientation/provider_impl.h
index c7c12eb4dce6651e6dc315caa3a91e08a239ffd5..a6affe2f8ac201134ed9b9c553e6b87eff12e84b 100644
--- a/content/browser/device_orientation/provider_impl.h
+++ b/content/browser/device_orientation/provider_impl.h
@@ -33,8 +33,15 @@ class ProviderImpl : public Provider {
   CONTENT_EXPORT ProviderImpl(const DataFetcherFactory factories[]);
 
   // From Provider.
-  virtual void AddObserver(Observer* observer) OVERRIDE;
-  virtual void RemoveObserver(Observer* observer) OVERRIDE;
+  virtual void AddMotionObserver(MotionObserver* observer) OVERRIDE {
+    // TODO(aousterh): implement this
+  }
+  virtual void AddOrientationObserver(OrientationObserver* observer) OVERRIDE;
+  virtual void RemoveMotionObserver(MotionObserver* observer) OVERRIDE {
+    // TODO(aousterh): implement this
+  }
+  virtual void RemoveOrientationObserver(
+      OrientationObserver* observer) OVERRIDE;
 
  private:
   virtual ~ProviderImpl();
@@ -70,7 +77,7 @@ class ProviderImpl : public Provider {
 
   // Members below are only to be used from the creator_loop_.
   std::vector<DataFetcherFactory> factories_;
-  std::set<Observer*> observers_;
+  std::set<OrientationObserver*> observers_;
   Orientation last_notification_;
 
   // When polling_thread_ is running, members below are only to be used