Avoid duplicate functions/code in core/inspector.

third_party/WebKit/Source/core/inspector/BUILD.gn

Index: third_party/WebKit/Source/core/inspector/BUILD.gn
diff --git a/third_party/WebKit/Source/core/inspector/BUILD.gn b/third_party/WebKit/Source/core/inspector/BUILD.gn
index d824be267aa4aaa1cb61055413b1bea5e558c924..4be89099a5c856bcefb0d959c1b922396f64ba49 100644
--- a/third_party/WebKit/Source/core/inspector/BUILD.gn
+++ b/third_party/WebKit/Source/core/inspector/BUILD.gn
@@ -11,8 +11,6 @@ _inspector_protocol_dir = "//third_party/inspector_protocol"
 
 blink_core_sources("inspector") {
   sources = [
-    "AddStringToDigestor.cpp",
-    "AddStringToDigestor.h",
     "ConsoleMessage.cpp",
     "ConsoleMessage.h",
     "ConsoleMessageStorage.cpp",
@@ -46,6 +44,8 @@ blink_core_sources("inspector") {
     "InspectorEmulationAgent.cpp",
     "InspectorEmulationAgent.h",
     "InspectorFrontendClient.h",
+    "InspectorHelpers.cpp",
+    "InspectorHelpers.h",
     "InspectorHighlight.cpp",
     "InspectorHighlight.h",
     "InspectorHistory.cpp",
@@ -96,15 +96,6 @@ blink_core_sources("inspector") {
     "WorkerThreadDebugger.h",
   ]
 
-  jumbo_excluded_sources = [
-    # Collides with InspectorPageAgent.cpp and
-    # NetworkResourcesData.cpp (patch incoming)
-    "InspectorNetworkAgent.cpp",
-
-    # Collides with InspectorPageAgent.cpp (patch incoming)
-    "MainThreadDebugger.cpp",
-  ]
-
   configs += [
     # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
     "//build/config/compiler:no_size_t_to_int_warning",