Moved the majority of WebGL functionality into WebGLRenderingContextBase

Source/core/html/canvas/OESTextureFloatLinear.h

Index: Source/core/html/canvas/OESTextureFloatLinear.h
diff --git a/Source/core/html/canvas/OESTextureFloatLinear.h b/Source/core/html/canvas/OESTextureFloatLinear.h
index 34a39941d70d23a32f627454d911d47f1d4c2a5d..d68bc4e0522859a3a1fb9a7066794738925697a1 100644
--- a/Source/core/html/canvas/OESTextureFloatLinear.h
+++ b/Source/core/html/canvas/OESTextureFloatLinear.h
@@ -34,15 +34,15 @@ namespace WebCore {
 
 class OESTextureFloatLinear : public WebGLExtension, public ScriptWrappable {
 public:
-    static PassRefPtr<OESTextureFloatLinear> create(WebGLRenderingContext*);
-    static bool supported(WebGLRenderingContext*);
+    static PassRefPtr<OESTextureFloatLinear> create(WebGLRenderingContextBase*);
+    static bool supported(WebGLRenderingContextBase*);
     static const char* getExtensionName();
 
     virtual ~OESTextureFloatLinear();
     virtual ExtensionName getName() const;
 
 private:
-    OESTextureFloatLinear(WebGLRenderingContext*);
+    OESTextureFloatLinear(WebGLRenderingContextBase*);
 };
 
 } // namespace WebCore