Add extra warnings to match what Android uses.

src/gpu/gl/GrGLProgramEffects.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLProgramEffects_DEFINED
 #define GrGLProgramEffects_DEFINED
 
@@ skipping 111 matching lines @@
 
     SkTArray<GrGLEffect*>                  fGLEffects;
     SkTArray<SkSTArray<4, Sampler, true> > fSamplers;
 };
 
 /**
  * This is an abstract base class for constructing different types of GrGLProgramEffects objects.
  */
 class GrGLProgramEffectsBuilder {
 public:
+    virtual ~GrGLProgramEffectsBuilder() { }
+
     /**
      * Emits the effect's shader code, and stores the necessary uniforms internally.
      */
     virtual void emitEffect(const GrEffectStage&,
                             GrGLProgramEffects::EffectKey,
                             const char* outColor,
                             const char* inColor,
                             int stageIndex) = 0;
 };
 
@@ skipping 62 matching lines @@
 
     typedef GrGLProgramEffects INHERITED;
 };
 
 /**
  * This class is used to construct a GrGLVertexProgramEffects* object.
  */
 class GrGLVertexProgramEffectsBuilder : public GrGLProgramEffectsBuilder {
 public:
     GrGLVertexProgramEffectsBuilder(GrGLFullShaderBuilder*, int reserveCount);
+    virtual ~GrGLVertexProgramEffectsBuilder() { }
 
     virtual void emitEffect(const GrEffectStage&,
                             GrGLProgramEffects::EffectKey,
                             const char* outColor,
                             const char* inColor,
                             int stageIndex) SK_OVERRIDE;
 
     /**
      * Finalizes the building process and returns the effect array. After this call, the builder
      * becomes invalid.
@@ skipping 67 matching lines @@
 
     typedef GrGLProgramEffects INHERITED;
 };
 
 /**
  * This class is used to construct a GrGLTexGenProgramEffects* object.
  */
 class GrGLTexGenProgramEffectsBuilder : public GrGLProgramEffectsBuilder {
 public:
     GrGLTexGenProgramEffectsBuilder(GrGLFragmentOnlyShaderBuilder*, int reserveCount);
+    virtual ~GrGLTexGenProgramEffectsBuilder() { }
 
     virtual void emitEffect(const GrEffectStage&,
                             GrGLProgramEffects::EffectKey,
                             const char* outColor,
                             const char* inColor,
                             int stageIndex) SK_OVERRIDE;
 
     /**
      * Finalizes the building process and returns the effect array. After this call, the builder
      * becomes invalid.
      */
     GrGLProgramEffects* finish() { return fProgramEffects.detach(); }
 
 private:
     GrGLFragmentOnlyShaderBuilder*          fBuilder;
     SkAutoTDelete<GrGLTexGenProgramEffects> fProgramEffects;
 
     typedef GrGLProgramEffectsBuilder INHERITED;
 };
 
 #endif