Make BGRA8888 renderable on CHROMIUM_framebuffer_mixed_samples

src/gpu/gl/GrGLCaps.cpp

Index: src/gpu/gl/GrGLCaps.cpp
diff --git a/src/gpu/gl/GrGLCaps.cpp b/src/gpu/gl/GrGLCaps.cpp
index 9a2a5acad9fe9142229cf6d7d76fa563cb864d95..0122e1f358d95cce2b7e4e0f517fc4ff2b74cab8 100644
--- a/src/gpu/gl/GrGLCaps.cpp
+++ b/src/gpu/gl/GrGLCaps.cpp
@@ -293,7 +293,8 @@ void GrGLCaps::init(const GrContextOptions& contextOptions,
         fUsesMixedSamples = ctxInfo.hasExtension("GL_NV_framebuffer_mixed_samples") ||
                 ctxInfo.hasExtension("GL_CHROMIUM_framebuffer_mixed_samples");
         // Workaround NVIDIA bug related to glInvalidateFramebuffer and mixed samples.
-        if (fUsesMixedSamples && kNVIDIA_GrGLDriver == ctxInfo.driver()) {
+        if (fUsesMixedSamples && (kNVIDIA_GrGLDriver == ctxInfo.driver() ||
+                                  kChromium_GrGLDriver == ctxInfo.driver())) {
             fDiscardRenderTargetSupport = false;
             fInvalidateFBType = kNone_InvalidateFBType;
         }
@@ -1201,7 +1202,7 @@ void GrGLCaps::initConfigTable(const GrGLContextInfo& ctxInfo, const GrGLInterfa
             fConfigTable[kBGRA_8888_GrPixelConfig].fFlags = ConfigInfo::kTextureable_Flag |
                                                             ConfigInfo::kRenderable_Flag;
             if (ctxInfo.hasExtension("GL_CHROMIUM_renderbuffer_format_BGRA8888") &&
-                this->usesMSAARenderBuffers()) {
+                (this->usesMSAARenderBuffers() || this->fMSFBOType == kMixedSamples_MSFBOType)) {
                 fConfigTable[kBGRA_8888_GrPixelConfig].fFlags |=
                     ConfigInfo::kRenderableWithMSAA_Flag;
             }