4 files changed, 63 insertions, 0 deletions
diff --git a/build/internal/README.chromium b/build/internal/README.chromium
new file mode 100644
index 0000000..4624830
--- /dev/null
+++ b/build/internal/README.chromium
@@ -0,0 +1,24 @@
+Internal property sheets:
+  essential.vsprops
+    Contains the common settings used throughout the projects. Is included by either ..\debug.vsprops or ..\release.vsprops, so in general, it is not included directly.
+
+  release_defaults.vsprops
+    Included by ..\release.vsprops. Its settings are overriden by release_impl$(CHROME_BUILD_TYPE).vsprops. Uses the default VS setting which is "Maximize Speed". Results in relatively fast build with reasonable optimization level but without whole program optimization to reduce build time.
+
+  release_impl.vsprops
+    Included by ..\release.vsprops by default when CHROME_BUILD_TYPE is undefined. Includes release_defaults.vsprops.
+
+  release_impl_checksenabled.vsprops
+    Included by ..\release.vsprops when CHROME_BUILD_TYPE=_checksenabled. Matches what release_defaults.vsprops does, but doesn't actually inherit from it as we couldn't quite get that working. The only difference is that _DEBUG is set instead of NDEBUG. Used for keeping debug checks enabled with a build that is fast enough to dogfood with.
+
+  release_impl_official.vsprops
+    Included by ..\release.vsprops when CHROME_BUILD_TYPE=_official. Includes release_defaults.vsprops. Enables Whole Program Optimizations (WPO), which doubles the build time. Results in much more optimized build. Uses "Full Optimization" and "Flavor small code".
+
+  release_impl_pgo_instrument.vsprops
+    Included by ..\release.vsprops when CHROME_BUILD_TYPE=_pgo_instrument. Includes release_defaults.vsprops. Enables Profile Guided Optimization (PGO) instrumentation (first pass). Uses "Full Optimization" and "Flavor small code".
+
+  release_impl_pgo_optimize.vsprops
+    Included by ..\release.vsprops when CHROME_BUILD_TYPE=_pgo_optimize. Includes release_defaults.vsprops. Enables Profile Guided Optimization (PGO) optimization (second pass). Uses "Full Optimization" and "Flavor small code".
+
+  release_impl_purify.vsprops
+    Included by ..\release.vsprops when CHROME_BUILD_TYPE=_purify. Includes release_defaults.vsprops. Disables optimizations. Used with Purify to test without debug tools and without optimization; i.e. NDEBUG is defined but the compiler doesn't optimize the binary.
diff --git a/build/internal/release_defaults.gypi b/build/internal/release_defaults.gypi
new file mode 100644
index 0000000..5aa2b75
--- /dev/null
+++ b/build/internal/release_defaults.gypi
@@ -0,0 +1,15 @@
+{
+  'msvs_settings': {
+    'VCCLCompilerTool': {
+      'Optimizations': '2',
+      'StringPooling': 'true',
+      'OmitFramePointers': 'true',
+    },
+    'VCLinkerTool': {
+      'LinkIncremental': '1',
+      'OptimizeReferences': '2',
+      'EnableCOMDATFolding': '2',
+      'OptimizeForWindows98': '1',
+    },
+  },
+}
diff --git a/build/internal/release_impl.gypi b/build/internal/release_impl.gypi
new file mode 100644
index 0000000..aff06dc
--- /dev/null
+++ b/build/internal/release_impl.gypi
@@ -0,0 +1,3 @@
+{
+  'includes': ['release_defaults.gypi'],
+}
diff --git a/build/internal/release_impl_official.gypi b/build/internal/release_impl_official.gypi
new file mode 100644
index 0000000..18f7928
--- /dev/null
+++ b/build/internal/release_impl_official.gypi
@@ -0,0 +1,21 @@
+{
+  'includes': ['release_defaults.gypi'],
+  'defines': ['OFFICIAL_BUILD'],
+  'msvs_settings': {
+    'VCCLCompilerTool': {
+      'Optimization': '3',
+      'InlineFunctionExpansion': '2',
+      'EnableIntrinsicFunctions': 'true',
+      'FavorSizeOrSpeed': '2',
+      'OmitFramePointers': 'true',
+      'EnableFiberSafeOptimizations': 'true',
+      'WholeProgramOptimization': 'true',
+    },
+    'VCLibrarianTool': {
+      'AdditionalOptions': ['/ltcg', '/expectedoutputsize:120000000'],
+    },
+    'VCLinkerTool': {
+      'LinkTimeCodeGeneration': '1',
+    },
+  },
+}