Remove stylesheet injection bindings for test runner.

content/shell/renderer/test_runner/test_runner.h

Index: content/shell/renderer/test_runner/test_runner.h
diff --git a/content/shell/renderer/test_runner/test_runner.h b/content/shell/renderer/test_runner/test_runner.h
index 57047c679cf1f6488d363364db4798a92130e88d..a76ef6c4e1c6c0515e66d5833e8cdafaa1d87125 100644
--- a/content/shell/renderer/test_runner/test_runner.h
+++ b/content/shell/renderer/test_runner/test_runner.h
@@ -243,10 +243,6 @@ class TestRunner : public WebTestRunner,
   // Forces the selection colors for testing under Linux.
   void ForceRedSelectionColors();
 
-  // Adds a style sheet to be injected into new documents.
-  // TODO(dcheng): This will be removed in a followup patch.
-  void InjectStyleSheet(const std::string& source_code, bool all_frames);
-
   // Add |source_code| as an injected stylesheet to the active document of the
   // window of the current V8 context.
   void InsertStyleSheet(const std::string& source_code);