Moved the majority of WebGL functionality into WebGLRenderingContextBase

Source/core/html/canvas/EXTTextureFilterAnisotropic.cpp

Index: Source/core/html/canvas/EXTTextureFilterAnisotropic.cpp
diff --git a/Source/core/html/canvas/EXTTextureFilterAnisotropic.cpp b/Source/core/html/canvas/EXTTextureFilterAnisotropic.cpp
index 81f5d823ed71b629b48a9e51555fa03768b516f3..4cf5c875f4e65c3cd24a694b6600d6d6c652538f 100644
--- a/Source/core/html/canvas/EXTTextureFilterAnisotropic.cpp
+++ b/Source/core/html/canvas/EXTTextureFilterAnisotropic.cpp
@@ -30,7 +30,7 @@
 
 namespace WebCore {
 
-EXTTextureFilterAnisotropic::EXTTextureFilterAnisotropic(WebGLRenderingContext* context)
+EXTTextureFilterAnisotropic::EXTTextureFilterAnisotropic(WebGLRenderingContextBase* context)
     : WebGLExtension(context)
 {
     ScriptWrappable::init(this);
@@ -46,12 +46,12 @@ WebGLExtension::ExtensionName EXTTextureFilterAnisotropic::getName() const
     return EXTTextureFilterAnisotropicName;
 }
 
-PassRefPtr<EXTTextureFilterAnisotropic> EXTTextureFilterAnisotropic::create(WebGLRenderingContext* context)
+PassRefPtr<EXTTextureFilterAnisotropic> EXTTextureFilterAnisotropic::create(WebGLRenderingContextBase* context)
 {
     return adoptRef(new EXTTextureFilterAnisotropic(context));
 }
 
-bool EXTTextureFilterAnisotropic::supported(WebGLRenderingContext* context)
+bool EXTTextureFilterAnisotropic::supported(WebGLRenderingContextBase* context)
 {
     Extensions3D* extensions = context->graphicsContext3D()->getExtensions();
     return extensions->supports("GL_EXT_texture_filter_anisotropic");