Remove SkCanvas matrix ops return value.

The internal SkMatrix ops can no longer fail -> we can remove the bool
return value.

R=bsalomon@google.com, reed@google.com, robertphillips@google.com, scroggo@google.com, fmalita@google.com

Author: fmalita@chromium.org

Review URL: https://codereview.chromium.org/200223008

git-svn-id: http://skia.googlecode.com/svn/trunk@13849 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/pdf/SkPDFDevice.cpp b/src/pdf/SkPDFDevice.cpp
index 66ddccf..b8e6818 100644
--- a/src/pdf/SkPDFDevice.cpp
+++ b/src/pdf/SkPDFDevice.cpp
@@ -983,10 +983,7 @@
             }
             origPath.transform(*prePathMatrix, pathPtr);
         } else {
-            if (!matrix.preConcat(*prePathMatrix)) {
-                // TODO(edisonn): report somehow why we failed?
-                return;
-            }
+            matrix.preConcat(*prePathMatrix);
         }
     }