Revert of add peekPixels to SkCanvas and SkSurface

src/core/SkCanvas.cpp

Index: src/core/SkCanvas.cpp
diff --git a/src/core/SkCanvas.cpp b/src/core/SkCanvas.cpp
index f5e91ffc43fa1b943f6ca62a59bdc2529c3cec21..ed8274dc5d3b4a9bf09d6241541620b1a11f9a4f 100644
--- a/src/core/SkCanvas.cpp
+++ b/src/core/SkCanvas.cpp
@@ -990,55 +990,6 @@
 SkSurface* SkCanvas::onNewSurface(const SkImageInfo& info) {
     SkBaseDevice* dev = this->getDevice();
     return dev ? dev->newSurface(info) : NULL;
-}
-
-SkImageInfo SkCanvas::imageInfo() const {
-    SkBaseDevice* dev = this->getDevice();
-    if (dev) {
-        return dev->imageInfo();
-    } else {
-        // TODO: need a real unknown for alphatype it seems.
-        SkAlphaType unknownAlphaType = kIgnore_SkAlphaType;
-        return SkImageInfo::Make(0, 0, kUnknown_SkColorType, unknownAlphaType);
-    }
-}
-
-const void* SkCanvas::peekPixels(SkImageInfo* info, size_t* rowBytes) {
-    return this->onPeekPixels(info, rowBytes);
-}
-
-const void* SkCanvas::onPeekPixels(SkImageInfo* info, size_t* rowBytes) {
-    SkBaseDevice* dev = this->getDevice();
-    return dev ? dev->peekPixels(info, rowBytes) : NULL;
-}
-
-SkAutoROCanvasPixels::SkAutoROCanvasPixels(SkCanvas* canvas) {
-    fAddr = canvas->peekPixels(&fInfo, &fRowBytes);
-    if (NULL == fAddr) {
-        fInfo = canvas->imageInfo();
-        if (kUnknown_SkColorType == fInfo.colorType() ||
-            !fBitmap.allocPixels(fInfo))
-        {
-            return; // failure, fAddr is NULL
-        }
-        fBitmap.lockPixels();
-        if (!canvas->readPixels(&fBitmap, 0, 0)) {
-            return; // failure, fAddr is NULL
-        }
-        fAddr = fBitmap.getPixels();
-        fRowBytes = fBitmap.rowBytes();
-    }
-    SkASSERT(fAddr);    // success
-}
-
-bool SkAutoROCanvasPixels::asROBitmap(SkBitmap* bitmap) const {
-    if (fAddr) {
-        return bitmap->installPixels(fInfo, const_cast<void*>(fAddr), fRowBytes,
-                                     NULL, NULL);
-    } else {
-        bitmap->reset();
-        return false;
-    }
 }
 
 /////////////////////////////////////////////////////////////////////////////