Fix runtime bustage for other ports that have the same problem as GTK. b=109974, 111088

gfx/src/beos/nsDeviceContextBeOS.cpp

@@ -61,8 +61,6 @@ static NS_DEFINE_CID(kPrefCID, NS_PREF_CID);
  
 nscoord nsDeviceContextBeOS::mDpi = 96; 
  
-NS_IMPL_ISUPPORTS1(nsDeviceContextBeOS, nsIDeviceContext) 
- 
 nsDeviceContextBeOS::nsDeviceContextBeOS()
 {
   NS_INIT_REFCNT();

gfx/src/beos/nsDeviceContextBeOS.h

@@ -53,8 +53,6 @@ public:
   nsDeviceContextBeOS();
   virtual ~nsDeviceContextBeOS();
 
-  NS_DECL_ISUPPORTS
-
   NS_IMETHOD  Init(nsNativeWidget aNativeWidget);
 
   NS_IMETHOD  CreateRenderingContext(nsIRenderingContext *&aContext);

gfx/src/photon/nsDeviceContextPh.cpp

@@ -93,8 +93,6 @@ nsDeviceContextPh :: ~nsDeviceContextPh( ) {
 	NS_IF_RELEASE( mSpec );
 	}
 
-NS_IMPL_ISUPPORTS1(nsDeviceContextPh, nsIDeviceContext)
-
 NS_IMETHODIMP nsDeviceContextPh :: Init( nsNativeWidget aWidget ) {
   float newscale, origscale;
   float a2d,t2d;

gfx/src/photon/nsDeviceContextPh.h

@@ -55,8 +55,6 @@ public:
   nsDeviceContextPh();
   virtual ~nsDeviceContextPh();
   
-  NS_DECL_ISUPPORTS
-  
   NS_IMETHOD  Init(nsNativeWidget aWidget);
 
 

gfx/src/qt/nsDeviceContextQT.cpp

@@ -68,8 +68,6 @@ static NS_DEFINE_CID(kPrefCID,NS_PREF_CID);
 
 nscoord nsDeviceContextQT::mDpi = 96;
 
-NS_IMPL_ISUPPORTS1(nsDeviceContextQT,nsIDeviceContext)
-
 nsDeviceContextQT::nsDeviceContextQT()
 {
   NS_INIT_REFCNT();

gfx/src/qt/nsDeviceContextQT.h

@@ -53,8 +53,6 @@ public:
     nsDeviceContextQT();
     virtual ~nsDeviceContextQT();
 
-    NS_DECL_ISUPPORTS
-
     NS_IMETHOD  Init(nsNativeWidget aNativeWidget);
 
     NS_IMETHOD  CreateRenderingContext(nsIRenderingContext *&aContext);