fix warnings on Mac in src/gpu and include/gpu

Fix these class of warnings:
- unused functions
- unused locals
- sign mismatch
- missing function prototypes
- missing newline at end of file
- 64 to 32 bit truncation

The changes prefer to link in dead code in the debug build
with 'if (false)' than to comment it out, but trivial cases
are commented out or sometimes deleted if it appears to be
a copy/paste error.
Review URL: https://codereview.appspot.com/6296044

git-svn-id: http://skia.googlecode.com/svn/trunk@4180 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 1 insertions, 3 deletions

diff --git a/src/gpu/GrResourceCache.cpp b/src/gpu/GrResourceCache.cpp
index ba6452dd59..848a9227e5 100644
--- a/src/gpu/GrResourceCache.cpp
+++ b/src/gpu/GrResourceCache.cpp
@@ -292,15 +292,13 @@ void GrResourceCache::purgeAsNeeded() {
 void GrResourceCache::removeAll() {
     GrAutoResourceCacheValidate atcv(this);
 
-    GrResourceEntry* entry = fHead;
-
     // we can have one GrResource holding a lock on another
     // so we don't want to just do a simple loop kicking each
     // entry out. Instead change the budget and purge.
 
     int savedMaxBytes = fMaxBytes;
     int savedMaxCount = fMaxCount;
-    fMaxBytes = -1;
+    fMaxBytes = (size_t) -1;
     fMaxCount = 0;
     this->purgeAsNeeded();