Fix content scripts that use WebGL.

third_party/WebKit/Source/modules/webgl/WebGLFramebuffer.cpp

Index: third_party/WebKit/Source/modules/webgl/WebGLFramebuffer.cpp
diff --git a/third_party/WebKit/Source/modules/webgl/WebGLFramebuffer.cpp b/third_party/WebKit/Source/modules/webgl/WebGLFramebuffer.cpp
index 0401fe7f747e97c2c386a25d5d09a0fd216714b4..860112e198ebbc02789f0515fbe5114063328876 100644
--- a/third_party/WebKit/Source/modules/webgl/WebGLFramebuffer.cpp
+++ b/third_party/WebKit/Source/modules/webgl/WebGLFramebuffer.cpp
@@ -422,11 +422,6 @@ GLenum WebGLFramebuffer::getDrawBuffer(GLenum drawBuffer)
     return GL_NONE;
 }
 
-ScopedPersistent<v8::Array>* WebGLFramebuffer::getPersistentCache()
-{
-    return &m_attachmentWrappers;
-}
-
 DEFINE_TRACE(WebGLFramebuffer)
 {
     visitor->trace(m_attachments);