build iOS with 'make all'

This builds all skia tests by treating iOS tools
as executable applications. A few warnings were
fixed as well.

Removed old trace draw code and remnants.
Review URL: https://codereview.appspot.com/6597063

git-svn-id: http://skia.googlecode.com/svn/trunk@5776 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/benchmain.cpp b/bench/benchmain.cpp
index dc9b257..eb8c4ed 100644
--- a/bench/benchmain.cpp
+++ b/bench/benchmain.cpp
@@ -397,7 +397,8 @@
     SkDebugf("    -h|--help : Show this help message.\n");
 }
 
-int main (int argc, char * const argv[]) {
+int tool_main(int argc, char** argv);
+int tool_main(int argc, char** argv) {
 #ifdef SK_ENABLE_INST_COUNT
     gPrintInstCount = true;
 #endif
@@ -907,3 +908,10 @@
 
     return 0;
 }
+
+#if !defined SK_BUILD_FOR_IOS
+int main(int argc, char * const argv[]) {
+    return tool_main(argc, (char**) argv);
+}
+#endif
+