Start cleaning up 64bit Win warnings

src/gpu/GrDrawState.h

Index: src/gpu/GrDrawState.h
===================================================================
--- src/gpu/GrDrawState.h	(revision 11751)
+++ src/gpu/GrDrawState.h	(working copy)
@@ -1014,7 +1014,7 @@
             for (int i = 0; i < fColorStageCnt; ++i) {
                 SkNEW_APPEND_TO_TARRAY(&drawState->fColorStages, GrEffectStage, (fStages[i]));
             }
-            int coverageStageCnt = fStages.count() - fColorStageCnt;
+            int coverageStageCnt = int(fStages.count()) - fColorStageCnt;

[bsalomon, 2013/10/14 15:17:02]

I think we conventionally write this cast as (int)fStages.count() or
static_cast<int>(fStages.count()).

Also, I think SkAutoSTArray is violating the bytes-are-size_t-and-counts-are-int
style and that its count() function should return an int.

[robertphillips, 2013/10/14 17:39:26]

Done.

             drawState->fCoverageStages.reset();
             for (int i = 0; i < coverageStageCnt; ++i) {
                 SkNEW_APPEND_TO_TARRAY(&drawState->fCoverageStages,
@@ -1023,7 +1023,7 @@
         }
 
         bool isEqual(const GrDrawState& state) const {
-            int numCoverageStages = fStages.count() - fColorStageCnt;
+            int numCoverageStages = int(fStages.count()) - fColorStageCnt;
             if (fRenderTarget != state.fRenderTarget.get() ||
                 fColorStageCnt != state.fColorStages.count() ||
                 numCoverageStages != state.fCoverageStages.count() ||