Initial work to get ETC1 data up to the GPU

src/gpu/GrContext.cpp

Index: src/gpu/GrContext.cpp
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
index baa002a54a5a0c387789e78b1003f4dc4399e955..3d29c9051fd39f7a747af6882a63ff0b1f7df801 100644
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -407,6 +407,33 @@ GrTexture* GrContext::createTexture(const GrTextureParams* params,
     return texture;
 }
 
+GrTexture* GrContext::createCompressedTexture(const GrTextureParams* params,
+                                              const GrTextureDesc& desc,
+                                              const GrCacheID& cacheID,
+                                              const void* srcData,
+                                              GrCompressedFormat format,
+                                              GrResourceKey* cacheKey) {
+    GrResourceKey resourceKey = GrTextureImpl::ComputeKey(fGpu, params, desc, cacheID);
+
+    GrTexture* texture = NULL;
+    if (!GrTextureImpl::NeedsResizing(resourceKey)) {
+        texture = fGpu->createCompressedTexture(desc, srcData, format);
+    }
+
+    if (NULL != texture) {
+        // Adding a resource could put us overbudget. Try to free up the
+        // necessary space before adding it.
+        fResourceCache->purgeAsNeeded(1, texture->gpuMemorySize());
+        fResourceCache->addResource(resourceKey, texture);
+
+        if (NULL != cacheKey) {
+            *cacheKey = resourceKey;
+        }
+    }
+
+    return texture;
+}
+
 static GrTexture* create_scratch_texture(GrGpu* gpu,
                                          GrResourceCache* resourceCache,
                                          const GrTextureDesc& desc) {