Turn on -Wall -Wextra on Mac, and fix all the warnings that crop up for /usr/bin/g++ and Clang 3.3.

src/gpu/GrDrawState.h

Index: src/gpu/GrDrawState.h
diff --git a/src/gpu/GrDrawState.h b/src/gpu/GrDrawState.h
index 1a67bb1ab006df1a8d7769567731712b144b230e..c006e6c5dd5de69fc93a8cd9385498069c8472be 100644
--- a/src/gpu/GrDrawState.h
+++ b/src/gpu/GrDrawState.h
@@ -41,7 +41,7 @@ public:
     /**
      * Copies another draw state.
      **/
-    GrDrawState(const GrDrawState& state) {
+    GrDrawState(const GrDrawState& state) : INHERITED() {
         GR_DEBUGCODE(fBlockEffectRemovalCnt = 0;)
         *this = state;
     }