Rebase and fix chromium

Combine texture provider and resource provider

Largely mechanical. Only three places that were calling createApprox
via texture provider (ie without flags), so that was simple.

BUG=skia:

Change-Id: I876367bcdc6a8db736deedab1028de1972015509
Reviewed-on: https://skia-review.googlesource.com/9176
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
diff --git a/tests/RenderTargetContextTest.cpp b/tests/RenderTargetContextTest.cpp
index 5917a2d..632ae82 100644
--- a/tests/RenderTargetContextTest.cpp
+++ b/tests/RenderTargetContextTest.cpp
@@ -71,7 +71,7 @@
         GrTextureProxy* tProxy = rtCtx->asTextureProxy();
         REPORTER_ASSERT(reporter, tProxy);
 
-        GrTexture* tex = tProxy->instantiate(ctx->textureProvider());
+        GrTexture* tex = tProxy->instantiate(ctx->resourceProvider());
         REPORTER_ASSERT(reporter, tex);
 
         check_is_wrapped_status(reporter, rtCtx.get(), true);