Generate web, devtools files into their own sub-dirs.

Source/devtools/devtools.gyp

Index: Source/devtools/devtools.gyp
diff --git a/Source/devtools/devtools.gyp b/Source/devtools/devtools.gyp
index 3833ec09359d3e99158558c63145354d62811bf9..ee855fe348fa15f0ab13502204aef29b9367d584 100644
--- a/Source/devtools/devtools.gyp
+++ b/Source/devtools/devtools.gyp
@@ -29,6 +29,9 @@
 #
 
 {
+    'variables': {
+      'blink_devtools_output_dir': '<(SHARED_INTERMEDIATE_DIR)/blink/devtools',
+    },
     'includes': [
       'devtools.gypi',
     ],
@@ -173,12 +176,12 @@
                         'relative_path_dirs': [
                             'front_end',
                             '<(PRODUCT_DIR)/resources/inspector',
-                            '<(SHARED_INTERMEDIATE_DIR)/blink',
+                            '<(blink_devtools_output_dir)',
                         ],
                         'input_pages': [
                             '<@(all_devtools_files)',
-                            '<(SHARED_INTERMEDIATE_DIR)/blink/InspectorBackendCommands.js',
-                            '<(SHARED_INTERMEDIATE_DIR)/blink/SupportedCSSProperties.js',
+                            '<(blink_devtools_output_dir)/InspectorBackendCommands.js',
+                            '<(blink_devtools_output_dir)/SupportedCSSProperties.js',
                             '<(PRODUCT_DIR)/resources/inspector/devtools.html',
                         ],
                         'images': [
@@ -212,13 +215,13 @@
                 'protocol.json',
               ],
               'outputs': [
-                '<(SHARED_INTERMEDIATE_DIR)/blink/InspectorBackendCommands.js',
+                '<(blink_devtools_output_dir)/InspectorBackendCommands.js',
               ],
               'action': [
                 'python',
                 'scripts/CodeGeneratorFrontend.py',
                 'protocol.json',
-                '--output_js_dir', '<(SHARED_INTERMEDIATE_DIR)/blink',
+                '--output_js_dir', '<(blink_devtools_output_dir)',
               ],
               'message': 'Generating Inspector protocol frontend sources from protocol.json',
             },
@@ -239,7 +242,7 @@
                 '../core/css/CSSShorthands.in',
               ],
               'outputs': [
-                '<(SHARED_INTERMEDIATE_DIR)/blink/SupportedCSSProperties.js',
+                '<(blink_devtools_output_dir)/SupportedCSSProperties.js',
               ],
               'action': [
                 'python',
@@ -270,12 +273,12 @@
                             '<@(_script_name)',
                             '<@(_input_page)',
                             '<@(devtools_core_js_files)',
-                            '<(SHARED_INTERMEDIATE_DIR)/blink/InspectorBackendCommands.js',
-                            '<(SHARED_INTERMEDIATE_DIR)/blink/SupportedCSSProperties.js',
-                            '<(SHARED_INTERMEDIATE_DIR)/blink/common/modules.js',
+                            '<(blink_devtools_output_dir)/InspectorBackendCommands.js',
+                            '<(blink_devtools_output_dir)/SupportedCSSProperties.js',
+                            '<(blink_devtools_output_dir)/common/modules.js',
                         ],
                         'search_path': [
-                            '<(SHARED_INTERMEDIATE_DIR)/blink',
+                            '<(blink_devtools_output_dir)',
                             'front_end',
                         ],
                         'outputs': ['<(PRODUCT_DIR)/resources/inspector/main/Main.js'],
@@ -288,8 +291,8 @@
                             'destination': '<(PRODUCT_DIR)/resources/inspector',
                             'files': [
                                 '<@(devtools_core_base_js_files)',
-                                '<(SHARED_INTERMEDIATE_DIR)/blink/InspectorBackendCommands.js',
-                                '<(SHARED_INTERMEDIATE_DIR)/blink/SupportedCSSProperties.js',
+                                '<(blink_devtools_output_dir)/InspectorBackendCommands.js',
+                                '<(blink_devtools_output_dir)/SupportedCSSProperties.js',
                             ],
                         },
                         {
@@ -900,7 +903,7 @@
                             '<@(_input_file)',
                             '<@(devtools_module_json_files)',
                         ],
-                        'outputs': ['<(SHARED_INTERMEDIATE_DIR)/blink/common/modules.js'],
+                        'outputs': ['<(blink_devtools_output_dir)/common/modules.js'],
                         'action': ['python', '<@(_script_name)', '<@(_input_file)', '<@(_outputs)', '<@(devtools_module_json_files)'],
                     }],
                 },