Remove dependencies on Android's forked decoder libraries

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 354 matching lines @@
         # compliant optimizations.
         'SK_BUILD_FOR_ANDROID_FRAMEWORK',
         # Optimizations for chromium (m30)
         'GR_GL_CUSTOM_SETUP_HEADER "gl/GrGLConfig_chrome.h"',
         'SK_DEFAULT_FONT_CACHE_LIMIT   (768 * 1024)',
         'SK_DEFAULT_GLOBAL_DISCARDABLE_MEMORY_POOL_SIZE (512 * 1024)',
         'SK_IGNORE_ETC1_SUPPORT',
         # We can't use the skia_shared_lib gyp setting because we need expose
         # this define globally and the the implemention define as a cflag.
         'SKIA_DLL',
-        'SK_PRINT_CODEC_MESSAGES',

[msarett, 2015/11/05 15:05:43]

Maybe this doesn't belong with this CL.

But this outputs a tremendous amount of jpeg garbage (so much that I wonder if
it affects performance).  Maybe a better fix is to turn off error printing from
libjpeg-turbo.  I'm not sure there has ever been a useful output error message.

[scroggo, 2015/11/05 18:35:52]

FWIW, turning off error printing in libjpeg-turbo should be easy. In
SkJpegDecoderMgr.cpp, we set emit_message and output_message to functions which
call SkCodecPrintf. We could instead set them (one or both) to do nothing.
SkImageDecoder_libjpeg does this.

Chrome's JPEGImageDecoder is worth looking at as well. It uses the default for
emit_message (found here:
https://code.google.com/p/chromium/codesearch#chromium/src/third_party/libjpe...),
which uses the int parameter to decide whether to print anything. For
progressive images, it has its own emit_message function (here:
https://code.google.com/p/chromium/codesearch#chromium/src/third_party/WebKit...).
It uses the default version of output_message (see
https://code.google.com/p/chromium/codesearch#chromium/src/third_party/libjpe...)

[msarett, 2015/11/05 22:13:25]

I'll make the change in SkJpegCodec in a follow-up CL.  Turning this back on.

       ],
     }],
 
     ['skia_use_android_framework_defines', {
       # Add these defines when building for the Android framework, or when
       # specifically requested. These should be temporary staging defines. Any
       # permanent defines should be moved into the skia_android_framework block
       # above.
       'includes' : [
         'skia_for_android_framework_defines.gypi',
@@ skipping 246 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',
   },
 }