Issue #1288 - Part 1a: Update brotli to 1.0.7

This also reorganizes the exports in the build system to use `brotli/`
as include directory.

modules/brotli/moz.build

@@ -4,19 +4,21 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-EXPORTS += [
-    'dec/bit_reader.h',
-    'dec/decode.h',
-    'dec/huffman.h',
-    'dec/port.h',
-    'dec/state.h',
-    'dec/types.h',
+with Files('**'):
+    BUG_COMPONENT = ('Core', 'General')
+
+EXPORTS.brotli += [
+    'include/brotli/decode.h',
+    'include/brotli/encode.h',
+    'include/brotli/port.h',
+    'include/brotli/types.h',
 ]
 
 UNIFIED_SOURCES += [
+    'common/dictionary.c',
+    'common/transform.c',
     'dec/bit_reader.c',
     'dec/decode.c',
-    'dec/dictionary.c',
     'dec/huffman.c',
     'dec/state.c',
 ]
@@ -24,6 +26,41 @@ UNIFIED_SOURCES += [
 # We allow warnings for third-party code that can be updated from upstream.
 ALLOW_COMPILER_WARNINGS = True
 
+LOCAL_INCLUDES += [
+    'include',
+]
+
 CFLAGS += ['-DBROTLI_BUILD_PORTABLE']
 
 Library('brotli')
+
+HostProgram('brotli')
+
+HOST_SOURCES += UNIFIED_SOURCES
+
+HOST_SOURCES += [
+    'enc/backward_references.c',
+    'enc/backward_references_hq.c',
+    'enc/bit_cost.c',
+    'enc/block_splitter.c',
+    'enc/brotli_bit_stream.c',
+    'enc/cluster.c',
+    'enc/compress_fragment.c',
+    'enc/compress_fragment_two_pass.c',
+    'enc/dictionary_hash.c',
+    'enc/encode.c',
+    'enc/encoder_dict.c',
+    'enc/entropy_encode.c',
+    'enc/histogram.c',
+    'enc/literal_cost.c',
+    'enc/memory.c',
+    'enc/metablock.c',
+    'enc/static_dict.c',
+    'enc/utf8_util.c',
+    'tools/brotli.c',
+]
+
+if CONFIG['HOST_CC_TYPE'] not in ('msvc', 'clang-cl'):
+    HOST_OS_LIBS += [
+        'm' # for log2() function used by Brotli encoder
+    ]