Initial work to get ETC1 data up to the GPU

src/gpu/GrGpu.cpp

Index: src/gpu/GrGpu.cpp
diff --git a/src/gpu/GrGpu.cpp b/src/gpu/GrGpu.cpp
index 111f632502f075632028689fa64fcf483f7e9e29..9b828753f0cf378cb097e7ff7820c38f30fff99f 100644
--- a/src/gpu/GrGpu.cpp
+++ b/src/gpu/GrGpu.cpp
@@ -133,6 +133,26 @@ GrTexture* GrGpu::createTexture(const GrTextureDesc& desc,
     return tex;
 }
 
+GrTexture* GrGpu::createCompressedTexture(const GrTextureDesc& desc, const void* srcData) {
+    if (kUnknown_GrPixelConfig == desc.fConfig ||
+        !GrPixelConfigIsCompressed(desc.fConfig)) {
+        return NULL;
+    }
+
+    // We shouldn't be rendering into this
+    if (desc.fFlags & kRenderTarget_GrTextureFlagBit) {
+        return NULL;
+    }
+
+    // Do we support this format?
+    if (!this->caps()->isConfigTexturable(desc.fConfig)) {
+        return NULL;
+    }
+
+    this->handleDirtyContext();
+    return this->onCreateCompressedTexture(desc, srcData);
+}
+
 bool GrGpu::attachStencilBufferToRenderTarget(GrRenderTarget* rt) {
     SkASSERT(NULL == rt->getStencilBuffer());
     GrStencilBuffer* sb =