Remove SkCanvas matrix ops return value.

src/pdf/SkPDFDevice.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkPDFDevice.h"
 
 #include "SkAnnotation.h"
@@ skipping 965 matching lines @@
 
     SkMatrix matrix = *d.fMatrix;
     if (prePathMatrix) {
         if (paint.getPathEffect() || paint.getStyle() != SkPaint::kFill_Style) {
             if (!pathIsMutable) {
                 pathPtr = &modifiedPath;
                 pathIsMutable = true;
             }
             origPath.transform(*prePathMatrix, pathPtr);
         } else {
-            if (!matrix.preConcat(*prePathMatrix)) {
-                // TODO(edisonn): report somehow why we failed?
-                return;
-            }
+            matrix.preConcat(*prePathMatrix);
         }
     }
 
     if (paint.getPathEffect()) {
         if (d.fClip->isEmpty()) {
             return;
         }
         if (!pathIsMutable) {
             pathPtr = &modifiedPath;
             pathIsMutable = true;
@@ skipping 1311 matching lines @@
 }
 
 bool SkPDFDevice::onReadPixels(const SkBitmap& bitmap, int x, int y,
                                SkCanvas::Config8888) {
     return false;
 }
 
 bool SkPDFDevice::allowImageFilter(const SkImageFilter*) {
     return false;
 }