Removed unused parameters

I removed unused parameters wherever it was trivial to do so.
Review URL: https://codereview.chromium.org/12772003

git-svn-id: http://skia.googlecode.com/svn/trunk@8103 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/animator/SkDrawBitmap.cpp b/src/animator/SkDrawBitmap.cpp
index 4604a71..2a482d7 100644
--- a/src/animator/SkDrawBitmap.cpp
+++ b/src/animator/SkDrawBitmap.cpp
@@ -85,7 +85,7 @@
 }
 #endif
 
-void SkDrawBitmap::onEndElement(SkAnimateMaker& maker) {
+void SkDrawBitmap::onEndElement(SkAnimateMaker&) {
     SkASSERT(format != (SkBitmap::Config) -1);
     SkASSERT(width != -1);
     SkASSERT(height != -1);