Rename existing nonpreserving reallocs to reset, add reset to SkAutoMalloc, use reset in GrBufferAllocPool

Review URL: http://codereview.appspot.com/4951058/


git-svn-id: http://skia.googlecode.com/svn/trunk@2215 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu/src/GrDefaultPathRenderer.cpp b/gpu/src/GrDefaultPathRenderer.cpp
index 79d6e25..b70b863 100644
--- a/gpu/src/GrDefaultPathRenderer.cpp
+++ b/gpu/src/GrDefaultPathRenderer.cpp
@@ -193,7 +193,7 @@
 }
 
 void GrDefaultPathRenderer::pathWillClear() {
-    fSubpathVertCount.realloc(0);
+    fSubpathVertCount.reset(0);
     fTarget->resetVertexSource();
     if (fUseIndexedDraw) {
         fTarget->resetIndexSource();
@@ -278,7 +278,7 @@
         idx = idxBase;
     }
 
-    fSubpathVertCount.realloc(fSubpathCount);
+    fSubpathVertCount.reset(fSubpathCount);
 
     GrPoint pts[4];