Prevent duplicate content script injection defined in manifest.json (reland)

extensions/renderer/programmatic_script_injector.cc

Index: extensions/renderer/programmatic_script_injector.cc
diff --git a/extensions/renderer/programmatic_script_injector.cc b/extensions/renderer/programmatic_script_injector.cc
index 9cd4f9f3a37bb7ee05e8284ac84d278fdd191b64..0c40d72054e23e3694dd969eb5d3c2e897b43400 100644
--- a/extensions/renderer/programmatic_script_injector.cc
+++ b/extensions/renderer/programmatic_script_injector.cc
@@ -59,12 +59,14 @@ bool ProgrammaticScriptInjector::ExpectsResults() const {
 }
 
 bool ProgrammaticScriptInjector::ShouldInjectJs(
-    UserScript::RunLocation run_location) const {
+    UserScript::RunLocation run_location,
+    const std::set<std::string>& executing_scripts) const {
   return GetRunLocation() == run_location && params_->is_javascript;
 }
 
 bool ProgrammaticScriptInjector::ShouldInjectCss(
-    UserScript::RunLocation run_location) const {
+    UserScript::RunLocation run_location,
+    const std::set<std::string>& injected_stylesheets) const {
   return GetRunLocation() == run_location && !params_->is_javascript;
 }
 
@@ -94,7 +96,9 @@ PermissionsData::AccessType ProgrammaticScriptInjector::CanExecuteOnFrame(
 }
 
 std::vector<blink::WebScriptSource> ProgrammaticScriptInjector::GetJsSources(
-    UserScript::RunLocation run_location) const {
+    UserScript::RunLocation run_location,
+    std::set<std::string>* executing_scripts,
+    size_t* num_injected_js_scripts) const {
   DCHECK_EQ(GetRunLocation(), run_location);
   DCHECK(params_->is_javascript);
 
@@ -105,7 +109,9 @@ std::vector<blink::WebScriptSource> ProgrammaticScriptInjector::GetJsSources(
 }
 
 std::vector<blink::WebString> ProgrammaticScriptInjector::GetCssSources(
-    UserScript::RunLocation run_location) const {
+    UserScript::RunLocation run_location,
+    std::set<std::string>* injected_stylesheets,
+    size_t* num_injected_stylesheets) const {
   DCHECK_EQ(GetRunLocation(), run_location);
   DCHECK(!params_->is_javascript);
 
@@ -113,11 +119,6 @@ std::vector<blink::WebString> ProgrammaticScriptInjector::GetCssSources(
       1, blink::WebString::fromUTF8(params_->code));
 }
 
-void ProgrammaticScriptInjector::GetRunInfo(
-    ScriptsRunInfo* scripts_run_info,
-    UserScript::RunLocation run_location) const {
-}
-
 void ProgrammaticScriptInjector::OnInjectionComplete(
     std::unique_ptr<base::Value> execution_result,
     UserScript::RunLocation run_location,