PowerPC is not supported by blink

Source/core/platform/audio/DirectConvolver.cpp

Index: Source/core/platform/audio/DirectConvolver.cpp
diff --git a/Source/core/platform/audio/DirectConvolver.cpp b/Source/core/platform/audio/DirectConvolver.cpp
index 030719f53c3c26dee63c506c6c914cc964a7be53..6b9cb07a97baa6b38b83fe92c4fc2a0db14d99a4 100644
--- a/Source/core/platform/audio/DirectConvolver.cpp
+++ b/Source/core/platform/audio/DirectConvolver.cpp
@@ -90,11 +90,11 @@ void DirectConvolver::process(AudioFloatArray* convolutionKernel, const float* s
     memcpy(inputP, sourceP, sizeof(float) * framesToProcess);
 
 #if OS(MACOSX)
-#if defined(__ppc__) || defined(__i386__)
+#if defined(__i386__)
     conv(inputP - kernelSize + 1, 1, kernelP + kernelSize - 1, -1, destP, 1, framesToProcess, kernelSize);
 #else
     vDSP_conv(inputP - kernelSize + 1, 1, kernelP + kernelSize - 1, -1, destP, 1, framesToProcess, kernelSize);
-#endif // defined(__ppc__) || defined(__i386__)
+#endif // defined(__i386__)
 #else
     // FIXME: The macro can be further optimized to avoid pipeline stalls. One possibility is to maintain 4 separate sums and change the macro to CONVOLVE_FOUR_SAMPLES.
 #define CONVOLVE_ONE_SAMPLE             \