Revert of Don't flush on read/write pixels unless necessary

src/gpu/GrSurface.cpp

Index: src/gpu/GrSurface.cpp
diff --git a/src/gpu/GrSurface.cpp b/src/gpu/GrSurface.cpp
index d15cbdf6e26ccc7fd3b3745cb9ced18747132395..52ab4fd11dc2963fa3612b482d84ea8f33eafea7 100644
--- a/src/gpu/GrSurface.cpp
+++ b/src/gpu/GrSurface.cpp
@@ -44,39 +44,3 @@
 
     return true;
 }
-
-bool GrSurface::hasPendingRead() const {
-    const GrTexture* thisTex = this->asTexture();
-    if (thisTex && thisTex->internalHasPendingRead()) {
-        return true;
-    }
-    const GrRenderTarget* thisRT = this->asRenderTarget();
-    if (thisRT && thisRT->internalHasPendingRead()) {
-        return true;
-    }
-    return false;
-}
-
-bool GrSurface::hasPendingWrite() const {
-    const GrTexture* thisTex = this->asTexture();
-    if (thisTex && thisTex->internalHasPendingWrite()) {
-        return true;
-    }
-    const GrRenderTarget* thisRT = this->asRenderTarget();
-    if (thisRT && thisRT->internalHasPendingWrite()) {
-        return true;
-    }
-    return false;
-}
-
-bool GrSurface::hasPendingIO() const {
-    const GrTexture* thisTex = this->asTexture();
-    if (thisTex && thisTex->internalHasPendingIO()) {
-        return true;
-    }
-    const GrRenderTarget* thisRT = this->asRenderTarget();
-    if (thisRT && thisRT->internalHasPendingIO()) {
-        return true;
-    }
-    return false;
-}