Add caps overrides to GMs

src/gpu/GrCaps.cpp

Index: src/gpu/GrCaps.cpp
diff --git a/src/gpu/GrCaps.cpp b/src/gpu/GrCaps.cpp
index eb2cf7dcbd45a270524e875b80f0c0f40aa04e0c..c3c004c32f4b2a605b54fe34be73e49b2dc9e6ce 100644
--- a/src/gpu/GrCaps.cpp
+++ b/src/gpu/GrCaps.cpp
@@ -103,6 +103,10 @@ GrCaps::GrCaps(const GrContextOptions& options) {
     fDrawPathMasksToCompressedTextureSupport = options.fDrawPathToCompressedTexture;
 }
 
+void GrCaps::applyOptionsOverrides(const GrContextOptions& options) {

[Chris Dalton, 2015/05/27 19:57:13]

Do we want a similar method on the shader caps, or is the idea to override
shader caps in this function as well?

[bsalomon, 2015/05/27 20:17:33]

I think we'd do it here as well. I added a stub function to GrShaderCaps to
apply overrides. It doesn't do anything currently.

+    fMaxTextureSize = SkTMin(fMaxTextureSize, options.fMaxTextureSizeOverride);
+}
+
 static SkString map_flags_to_string(uint32_t flags) {
     SkString str;
     if (GrCaps::kNone_MapFlags == flags) {