BUG: Fix test errors stemming from the new multi-threading mechanism.

Fix errors stemming from the use of the new `itk::MultiThreaderBase`
class for multi-threading.

The solution adopted in this patch set was based on the discussion in:
http://review.source.kitware.com/#/c/23434/

Author: Jon Haitz Legarreta

include/itkCoocurrenceTextureFeaturesImageFilter.h

@@ -224,8 +224,7 @@ class ITK_TEMPLATE_EXPORT CoocurrenceTextureFeaturesImageFilter
   /** This method causes the filter to generate its output. */
   void BeforeThreadedGenerateData() override;
   void AfterThreadedGenerateData() override;
-  void ThreadedGenerateData(const OutputRegionType & outputRegionForThread,
-                                    ThreadIdType threadId) override;
+  void DynamicThreadedGenerateData( const OutputRegionType & outputRegionForThread ) override;
   void GenerateOutputInformation() override;
 
 private:

include/itkCoocurrenceTextureFeaturesImageFilter.hxx

@@ -68,6 +68,7 @@ CoocurrenceTextureFeaturesImageFilter< TInputImage, TOutputImage, TMaskImage>
   this->m_NeighborhoodRadius = nhood.GetRadius( );
 
   this->m_Normalize = false;
+  this->DynamicMultiThreadingOn();
 }
 
 template<typename TInputImage, typename TOutputImage, typename TMaskImage>
@@ -128,16 +129,11 @@ CoocurrenceTextureFeaturesImageFilter<TInputImage, TOutputImage, TMaskImage>
 template<typename TInputImage, typename TOutputImage, typename TMaskImage>
 void
 CoocurrenceTextureFeaturesImageFilter<TInputImage, TOutputImage, TMaskImage>
-::ThreadedGenerateData(const OutputRegionType & outputRegionForThread,
-                       ThreadIdType threadId)
+::DynamicThreadedGenerateData( const OutputRegionType & outputRegionForThread )
 {
   // Recuperation of the different inputs/outputs
   OutputImageType* outputPtr = this->GetOutput();
 
-  ProgressReporter progress( this,
-                             threadId,
-                             outputRegionForThread.GetNumberOfPixels() );
-
   // Creation of the output pixel type
   typename TOutputImage::PixelType outputPixel;
   NumericTraits<typename TOutputImage::PixelType>::SetLength(outputPixel, outputPtr->GetNumberOfComponentsPerPixel());
@@ -181,7 +177,6 @@ CoocurrenceTextureFeaturesImageFilter<TInputImage, TOutputImage, TMaskImage>
         {
         outputPixel.Fill(0);
         outputIt.Set(outputPixel);
-        progress.CompletedPixel();
         ++inputNIt;
         ++outputIt;
         continue;
@@ -237,7 +232,6 @@ CoocurrenceTextureFeaturesImageFilter<TInputImage, TOutputImage, TMaskImage>
       this->ComputeFeatures( hist, totalNumberOfFreq, outputPixel);
       outputIt.Set(outputPixel);
 
-      progress.CompletedPixel();
       ++inputNIt;
       ++outputIt;
       }

include/itkRunLengthTextureFeaturesImageFilter.h

@@ -246,8 +246,7 @@ class ITK_TEMPLATE_EXPORT RunLengthTextureFeaturesImageFilter
   /** This method causes the filter to generate its output. */
   void BeforeThreadedGenerateData() override;
   void AfterThreadedGenerateData() override;
-  void ThreadedGenerateData(const OutputRegionType & outputRegionForThread,
-                                    ThreadIdType threadId) override;
+  void DynamicThreadedGenerateData( const OutputRegionType & outputRegionForThread ) override;
   void GenerateOutputInformation() override;
 
 private:

include/itkRunLengthTextureFeaturesImageFilter.hxx

@@ -69,6 +69,7 @@ RunLengthTextureFeaturesImageFilter< TInputImage, TOutputImage, TMaskImage>
   NeighborhoodType nhood;
   nhood.SetRadius( 2 );
   this->m_NeighborhoodRadius = nhood.GetRadius( );
+  this->DynamicMultiThreadingOn();
 }
 
 template<typename TInputImage, typename TOutputImage, typename TMaskImage>
@@ -132,16 +133,11 @@ RunLengthTextureFeaturesImageFilter<TInputImage, TOutputImage, TMaskImage>
 template<typename TInputImage, typename TOutputImage, typename TMaskImage>
 void
 RunLengthTextureFeaturesImageFilter<TInputImage, TOutputImage, TMaskImage>
-::ThreadedGenerateData(const OutputRegionType & outputRegionForThread,
-                       ThreadIdType threadId)
+::DynamicThreadedGenerateData( const OutputRegionType & outputRegionForThread )
 {
   // Get the inputs/outputs
   TOutputImage * outputPtr = this->GetOutput();
 
-  ProgressReporter progress( this,
-                             threadId,
-                             outputRegionForThread.GetNumberOfPixels() );
-
   // Creation of the output pixel type
   typename TOutputImage::PixelType outputPixel;
   NumericTraits<typename TOutputImage::PixelType>::SetLength(outputPixel, outputPtr->GetNumberOfComponentsPerPixel());
@@ -208,7 +204,6 @@ RunLengthTextureFeaturesImageFilter<TInputImage, TOutputImage, TMaskImage>
         {
         outputPixel.Fill(0);
         outputIt.Set(outputPixel);
-        progress.CompletedPixel();
         ++inputNIt;
         ++outputIt;
         continue;
@@ -285,7 +280,6 @@ RunLengthTextureFeaturesImageFilter<TInputImage, TOutputImage, TMaskImage>
       this->ComputeFeatures( histogram, totalNumberOfRuns, outputPixel);
       outputIt.Set(outputPixel);
 
-      progress.CompletedPixel();
       ++inputNIt;
       ++outputIt;
       }