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

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrDrawState_DEFINED
 #define GrDrawState_DEFINED
 
@@ skipping 23 matching lines @@
     }
 
     GrDrawState(const SkMatrix& initialViewMatrix) {
         GR_DEBUGCODE(fBlockEffectRemovalCnt = 0;)
         this->reset(initialViewMatrix);
     }
 
     /**
      * Copies another draw state.
      **/
-    GrDrawState(const GrDrawState& state) {
+    GrDrawState(const GrDrawState& state) : INHERITED() {
         GR_DEBUGCODE(fBlockEffectRemovalCnt = 0;)
         *this = state;
     }
 
     /**
      * Copies another draw state with a preconcat to the view matrix.
      **/
     GrDrawState(const GrDrawState& state, const SkMatrix& preConcatMatrix) {
         GR_DEBUGCODE(fBlockEffectRemovalCnt = 0;)
         *this = state;
@@ skipping 1036 matching lines @@
      *  @param count      the number of attributes being set, limited to kMaxVertexAttribCnt.
      */
     void setVertexAttribs(const GrVertexAttrib attribs[], int count);
 
     typedef GrRefCnt INHERITED;
 };
 
 GR_MAKE_BITFIELD_OPS(GrDrawState::BlendOptFlags);
 
 #endif