sRGB support in Ganesh. Several pieces:

src/gpu/SkGpuDevice.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkGpuDevice.h"
 
 #include "GrBlurUtils.h"
@@ skipping 175 matching lines @@
         origInfo.width() < 0 || origInfo.height() < 0) {
         return nullptr;
     }
 
     if (!context) {
         return nullptr;
     }
 
     SkColorType ct = origInfo.colorType();
     SkAlphaType at = origInfo.alphaType();
+    SkColorProfileType pt = origInfo.profileType();
     if (kRGB_565_SkColorType == ct) {
         at = kOpaque_SkAlphaType;  // force this setting
     } else if (ct != kBGRA_8888_SkColorType && ct != kRGBA_8888_SkColorType) {
         // Fall back from whatever ct was to default of kRGBA or kBGRA which is aliased as kN32
         ct = kN32_SkColorType;
     }
     if (kOpaque_SkAlphaType != at) {
         at = kPremul_SkAlphaType;  // force this setting
     }
-    const SkImageInfo info = SkImageInfo::Make(origInfo.width(), origInfo.height(), ct, at);
+    const SkImageInfo info = SkImageInfo::Make(origInfo.width(), origInfo.height(), ct, at, pt);
 
     GrSurfaceDesc desc;
     desc.fFlags = kRenderTarget_GrSurfaceFlag;
     desc.fWidth = info.width();
     desc.fHeight = info.height();
-    desc.fConfig = SkImageInfo2GrPixelConfig(info);
+    desc.fConfig = SkImageInfo2GrPixelConfig(info, *context->caps());
     desc.fSampleCnt = sampleCount;
     desc.fTextureStorageAllocator = textureStorageAllocator;
     desc.fIsMipMapped = false;
     GrTexture* texture = context->textureProvider()->createTexture(desc, budgeted, nullptr, 0);
     if (nullptr == texture) {
         return nullptr;
     }
     SkASSERT(nullptr != texture->asRenderTarget());
     return texture->asRenderTarget();
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 bool SkGpuDevice::onReadPixels(const SkImageInfo& dstInfo, void* dstPixels, size_t dstRowBytes,
                                int x, int y) {
     ASSERT_SINGLE_OWNER
 
     // TODO: teach fRenderTarget to take ImageInfo directly to specify the src pixels
-    GrPixelConfig config = SkImageInfo2GrPixelConfig(dstInfo);
+    GrPixelConfig config = SkImageInfo2GrPixelConfig(dstInfo, *fContext->caps());
     if (kUnknown_GrPixelConfig == config) {
         return false;
     }
 
     uint32_t flags = 0;
     if (kUnpremul_SkAlphaType == dstInfo.alphaType()) {
         flags = GrContext::kUnpremul_PixelOpsFlag;
     }
     return fRenderTarget->readPixels(x, y, dstInfo.width(), dstInfo.height(), config, dstPixels,
                                      dstRowBytes, flags);
 }
 
 bool SkGpuDevice::onWritePixels(const SkImageInfo& info, const void* pixels, size_t rowBytes,
                                 int x, int y) {
     ASSERT_SINGLE_OWNER
     // TODO: teach fRenderTarget to take ImageInfo directly to specify the src pixels
-    GrPixelConfig config = SkImageInfo2GrPixelConfig(info);
+    GrPixelConfig config = SkImageInfo2GrPixelConfig(info, *fContext->caps());
     if (kUnknown_GrPixelConfig == config) {
         return false;
     }
     uint32_t flags = 0;
     if (kUnpremul_SkAlphaType == info.alphaType()) {
         flags = GrContext::kUnpremul_PixelOpsFlag;
     }
     fRenderTarget->writePixels(x, y, info.width(), info.height(), config, pixels, rowBytes, flags);
 
     // need to bump our genID for compatibility with clients that "know" we have a bitmap
@@ skipping 1624 matching lines @@
 }
 
 SkImageFilter::Cache* SkGpuDevice::getImageFilterCache() {
     ASSERT_SINGLE_OWNER
     // We always return a transient cache, so it is freed after each
     // filter traversal.
     return SkGpuDevice::NewImageFilterCache();
 }
 
 #endif