Fix up all the easy virtual ... SK_OVERRIDE cases.

src/effects/gradients/SkLinearGradient.cpp

Index: src/effects/gradients/SkLinearGradient.cpp
diff --git a/src/effects/gradients/SkLinearGradient.cpp b/src/effects/gradients/SkLinearGradient.cpp
index 885a1b56c8e28d1b034cc726c465f80ffae73afa..b34c7964ee4770e23c44f92aafcd2295fdff784c 100644
--- a/src/effects/gradients/SkLinearGradient.cpp
+++ b/src/effects/gradients/SkLinearGradient.cpp
@@ -495,14 +495,14 @@ public:
 
     virtual ~GrLinearGradient() { }
 
-    virtual const char* name() const SK_OVERRIDE { return "Linear Gradient"; }
+    const char* name() const SK_OVERRIDE { return "Linear Gradient"; }
 
     virtual void getGLProcessorKey(const GrGLCaps& caps,
                                    GrProcessorKeyBuilder* b) const SK_OVERRIDE {
         GrGLLinearGradient::GenKey(*this, caps, b);
     }
 
-    virtual GrGLFragmentProcessor* createGLInstance() const SK_OVERRIDE {
+    GrGLFragmentProcessor* createGLInstance() const SK_OVERRIDE {
         return SkNEW_ARGS(GrGLLinearGradient, (*this));
     }