sRGB support in Ganesh. Several pieces:

gyp/common_conditions.gypi

 # Copyright 2015 Google Inc.
 #
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # conditions used in both common.gypi and skia.gyp in chromium
 #
 {
   'defines': [
     'SK_ALLOW_STATIC_GLOBAL_INITIALIZERS=<(skia_static_initializers)',
@@ skipping 214 matching lines @@
           '-fno-exceptions',
           '-fstrict-aliasing',
 
           '-Wall',
           '-Wextra',
           '-Winit-self',
           '-Wpointer-arith',
           '-Wsign-compare',
 
           '-Wno-unused-parameter',
+          '-Wno-tautological-compare',

[Brian Osman, 2016/03/17 18:07:03]

Is this okay? Without this, clang is warning on code like:
void foo(GrPixelConfig x) { SkASSERT(x < kGrPixelConfigCnt); }

I've added a new pixel config (which automatically adjusts kGrPixelConfigCnt),
but it's not clear to me why clang is now unhappy. People have suggested online
that you can suppress this at the site by casting the enum-typed variable to int
before the comparison. Would that be better than disabling this warning
globally?

         ],
         'cflags_cc': [
           '-std=c++11',
           '-fno-rtti',
           '-fno-threadsafe-statics',
           '-Wnon-virtual-dtor',
         ],
         'ldflags': [ '-rdynamic' ],
         'conditions': [
           [ 'skia_fast', { 'cflags': [ '<@(skia_fast_flags)' ] }],
@@ skipping 409 matching lines @@
             ],
           }],
           [ 'skia_profile_enabled == 1', {
             'cflags': ['-g', '-fno-omit-frame-pointer', '-marm', '-mapcs'],
           }],
           [ 'skia_clang_build', {
             'cflags': [
                 '-Wno-unknown-warning-option', # Allows unknown warnings
                 # These flags that are on by default for only the android
                 # toolchain and no other platforms.
-                '-Wno-tautological-compare',
                 '-Wno-unused-command-line-argument',
             ],
           }],
         ],
       },
     ],
 
     [ 'skia_moz2d', {
       'defines': [
         # add flags here (e.g. SK_SUPPORT_LEGACY_...) needed by moz2d
@@ skipping 11 matching lines @@
           'LD_RUNPATH_SEARCH_PATHS': ['@executable_path/.'],
       },
     }],
 
   ], # end 'conditions'
   # The Xcode SYMROOT must be at the root. See build/common.gypi in chromium for more details
   'xcode_settings': {
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }