SkGpuDevice: Delay locking bitmap pixels until we have a known texture cache miss.

src/gpu/SkGpuDevice.cpp

Index: src/gpu/SkGpuDevice.cpp
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index 837ff8c245474b3bef7d376b26fb6fdeab994557..22f01f92e81ce2076d517119887f8b344c79ddb7 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -1367,12 +1367,6 @@ void SkGpuDevice::internalDrawBitmap(const SkBitmap& bitmap,
     SkASSERT(bitmap.width() <= fContext->getMaxTextureSize() &&
              bitmap.height() <= fContext->getMaxTextureSize());
 
-    SkAutoLockPixels alp(bitmap, !bitmap.getTexture());
-    if (!bitmap.getTexture() && !bitmap.readyToDraw()) {
-        SkDebugf("nothing to draw\n");
-        return;
-    }
-
     GrTexture* texture;
     SkAutoCachedTexture act(this, bitmap, &params, &texture);
     if (NULL == texture) {