C++11 override should now be supported by all of {bots,Chrome,Android,Mozilla}

NOPRESUBMIT=true

BUG=skia:
DOCS_PREVIEW= https://skia.org/?cl=1037793002

Review URL: https://codereview.chromium.org/1037793002
diff --git a/samplecode/SampleTextAlpha.cpp b/samplecode/SampleTextAlpha.cpp
index 58e1db2..f344021 100644
--- a/samplecode/SampleTextAlpha.cpp
+++ b/samplecode/SampleTextAlpha.cpp
@@ -36,7 +36,7 @@
 
 protected:
     // overrides from SkEventSink
-    bool onQuery(SkEvent* evt) SK_OVERRIDE {
+    bool onQuery(SkEvent* evt) override {
         if (SampleCode::TitleQ(*evt)) {
             SampleCode::TitleR(evt, "TextAlpha");
             return true;
@@ -44,7 +44,7 @@
         return this->INHERITED::onQuery(evt);
     }
 
-    void onDrawContent(SkCanvas* canvas) SK_OVERRIDE {
+    void onDrawContent(SkCanvas* canvas) override {
         const char* str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
         SkPaint paint;
         SkScalar    x = SkIntToScalar(10);
@@ -69,11 +69,11 @@
         }
     }
 
-    SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) SK_OVERRIDE {
+    SkView::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) override {
         return new Click(this);
     }
 
-    bool onClick(Click* click) SK_OVERRIDE {
+    bool onClick(Click* click) override {
         int y = click->fICurr.fY;
         if (y < 0) {
             y = 0;