Implement resizeBilinearBackprop (tensorflow#98)

Author: nkreeger

src/nodejs_kernel_backend.ts

@@ -813,8 +813,15 @@ export class NodeJSKernelBackend implements KernelBackend {
   resizeBilinearBackprop(
       dy: Tensor<Rank.R4>, x: Tensor<Rank.R4>,
       alignCorners: boolean): Tensor<Rank.R4> {
-    // https://github.com/tensorflow/tfjs/issues/304
-    throw new Error('Method not implemented.');
+    const opAttrs = [
+      this.createTypeOpAttr('T', x.dtype), {
+        name: 'align_corners',
+        type: this.binding.TF_ATTR_BOOL,
+        value: alignCorners
+      }
+    ];
+    return this.executeSingleOutput('ResizeBilinearGrad', opAttrs, [dy, x]) as
+        Tensor4D;
   }
 
   resizeNearestNeighbor(

src/run_tests.ts

@@ -32,12 +32,10 @@ jasmine_util.setTestEnvFeatures([{BACKEND: 'tensorflow'}]);
 
 const IGNORE_LIST: string[] = [
   // See https://github.com/tensorflow/tfjs/issues/161
-  'depthwiseConv2D',           // Requires space_to_batch() for dilation > 1.
-  'separableConv2d',           // Requires space_to_batch() for dilation > 1.
-  'div',                       // https://github.com/tensorflow/tfjs/issues/215
-  'resizeNearestNeighbor',     // https://github.com/tensorflow/tfjs/issues/221
-  'IORouterRegistry',          // https://github.com/tensorflow/tfjs/issues/303
-  'resizeBilinear gradients',  // https://github.com/tensorflow/tfjs/issues/304
+  'depthwiseConv2D',   // Requires space_to_batch() for dilation > 1.
+  'separableConv2d',   // Requires space_to_batch() for dilation > 1.
+  'div',               // https://github.com/tensorflow/tfjs/issues/215
+  'IORouterRegistry',  // https://github.com/tensorflow/tfjs/issues/303
   // https://github.com/tensorflow/tfjs/issues/279
   'browser', 'LocalStorage', 'arrayBufferToBase64String', 'stringByteLength'
 ];