Implementation of subresource integrity attribute for secure origins.

Source/core/dom/ScriptLoader.cpp

Index: Source/core/dom/ScriptLoader.cpp
diff --git a/Source/core/dom/ScriptLoader.cpp b/Source/core/dom/ScriptLoader.cpp
index 694873aec75e9659d72d9c9cdd17ffaca8fa3231..803c2fb139a9f61437c1d90d77ea4d8dee99105e 100644
--- a/Source/core/dom/ScriptLoader.cpp
+++ b/Source/core/dom/ScriptLoader.cpp
@@ -42,6 +42,7 @@
 #include "core/html/imports/HTMLImport.h"
 #include "core/html/parser/HTMLParserIdioms.h"
 #include "core/frame/LocalFrame.h"
+#include "core/frame/SubresourceIntegrity.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
 #include "core/inspector/ConsoleMessage.h"
 #include "core/svg/SVGScriptElement.h"
@@ -322,6 +323,10 @@ void ScriptLoader::executeScript(const ScriptSourceCode& sourceCode, double* com
             contextDocument->addConsoleMessage(ConsoleMessage::create(SecurityMessageSource, ErrorMessageLevel, "Refused to execute script from '" + resource->url().elidedString() + "' because its MIME type ('" + resource->mimeType() + "') is not executable, and strict MIME type checking is enabled."));
             return;
         }
+
+        // FIXME: On failure, SRI should probably provide an error message for the console.
+        if (!SubresourceIntegrity::CheckSubresourceIntegrity(*m_element, sourceCode.source(), sourceCode.resource()->url()))
+            return;
     }
 
     // FIXME: Can this be moved earlier in the function?