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

This fixes every case where virtual and SK_OVERRIDE were on the same line,
which should be the bulk of cases.  We'll have to manually clean up the rest
over time unless I level up in regexes.

for f in (find . -type f); perl -p -i -e 's/virtual (.*)SK_OVERRIDE/\1SK_OVERRIDE/g' $f; end

BUG=skia:

Review URL: https://codereview.chromium.org/806653007
diff --git a/src/gpu/effects/GrDitherEffect.cpp b/src/gpu/effects/GrDitherEffect.cpp
index 799d970..5e73e3b 100644
--- a/src/gpu/effects/GrDitherEffect.cpp
+++ b/src/gpu/effects/GrDitherEffect.cpp
@@ -24,11 +24,11 @@
 
     virtual ~DitherEffect() {};
 
-    virtual const char* name() const SK_OVERRIDE { return "Dither"; }
+    const char* name() const SK_OVERRIDE { return "Dither"; }
 
-    virtual void getGLProcessorKey(const GrGLCaps&, GrProcessorKeyBuilder*) const SK_OVERRIDE;
+    void getGLProcessorKey(const GrGLCaps&, GrProcessorKeyBuilder*) const SK_OVERRIDE;
 
-    virtual GrGLFragmentProcessor* createGLInstance() const SK_OVERRIDE;
+    GrGLFragmentProcessor* createGLInstance() const SK_OVERRIDE;
 
 private:
     DitherEffect() {
@@ -37,9 +37,9 @@
     }
 
     // All dither effects are equal
-    virtual bool onIsEqual(const GrFragmentProcessor&) const SK_OVERRIDE { return true; }
+    bool onIsEqual(const GrFragmentProcessor&) const SK_OVERRIDE { return true; }
 
-    virtual void onComputeInvariantOutput(GrInvariantOutput* inout) const SK_OVERRIDE;
+    void onComputeInvariantOutput(GrInvariantOutput* inout) const SK_OVERRIDE;
 
     GR_DECLARE_FRAGMENT_PROCESSOR_TEST;