Renaming Observer to OrientationObserver in DeviceOrientation

content/browser/device_orientation/provider.h

Index: content/browser/device_orientation/provider.h
diff --git a/content/browser/device_orientation/provider.h b/content/browser/device_orientation/provider.h
index 39ec86007db1ff891627086b72caa1e9fa8a463f..2d3a4dfb506e8208f45071625f9032b4698e176d 100644
--- a/content/browser/device_orientation/provider.h
+++ b/content/browser/device_orientation/provider.h
@@ -14,15 +14,16 @@ class Orientation;
 
 class CONTENT_EXPORT Provider : public base::RefCountedThreadSafe<Provider> {
  public:
-  class Observer {
+  class OrientationObserver {
    public:
     // Called when the orientation changes.
-    // An Observer must not synchronously call Provider::RemoveObserver
-    // or Provider::AddObserver when this is called.
+    // An OrientationObserver must not synchronously call Provider::
+    // RemoveOrientationObserver or Provider::AddOrientationObserver when this
+    // is called.
     virtual void OnOrientationUpdate(const Orientation& orientation) = 0;
 
    protected:
-    virtual ~Observer() {}
+    virtual ~OrientationObserver() {}
   };
 
   // Returns a pointer to the singleton instance of this class.
@@ -39,10 +40,10 @@ class CONTENT_EXPORT Provider : public base::RefCountedThreadSafe<Provider> {
   // Get the current instance. Used for testing.
   static Provider* GetInstanceForTests();
 
-  // Note: AddObserver may call back synchronously to the observer with
-  // orientation data.
-  virtual void AddObserver(Observer* observer) = 0;
-  virtual void RemoveObserver(Observer* observer) = 0;
+  // Note: AddOrientationObserver may call back synchronously to the observer
+  // with the orientation data.
+  virtual void AddOrientationObserver(OrientationObserver* observer) = 0;
+  virtual void RemoveOrientationObserver(OrientationObserver* observer) = 0;
 
  protected:
   Provider();